From: Ryan Chen ryan_chen@aspeedtech.com
This patch adds the clock control driver for the AST2600 SoC.
Signed-off-by: Ryan Chen ryan_chen@aspeedtech.com Signed-off-by: Chia-Wei, Wang chiawei_wang@aspeedtech.com --- .../arm/include/asm/arch-aspeed/scu_ast2600.h | 338 +++++ drivers/clk/aspeed/Makefile | 1 + drivers/clk/aspeed/clk_ast2600.c | 1173 +++++++++++++++++ include/dt-bindings/clock/ast2600-clock.h | 62 + 4 files changed, 1574 insertions(+) create mode 100644 arch/arm/include/asm/arch-aspeed/scu_ast2600.h create mode 100644 drivers/clk/aspeed/clk_ast2600.c create mode 100644 include/dt-bindings/clock/ast2600-clock.h
diff --git a/arch/arm/include/asm/arch-aspeed/scu_ast2600.h b/arch/arm/include/asm/arch-aspeed/scu_ast2600.h new file mode 100644 index 0000000000..a205fb1f76 --- /dev/null +++ b/arch/arm/include/asm/arch-aspeed/scu_ast2600.h @@ -0,0 +1,338 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (c) Aspeed Technology Inc. + */ +#ifndef _ASM_ARCH_SCU_AST2600_H +#define _ASM_ARCH_SCU_AST2600_H + +#define SCU_UNLOCK_KEY 0x1688a8a8 + +#define SCU_CLKGATE1_EMMC BIT(27) +#define SCU_CLKGATE1_MAC2 BIT(21) +#define SCU_CLKGATE1_MAC1 BIT(20) +#define SCU_CLKGATE1_USB_HUB BIT(14) +#define SCU_CLKGATE1_USB_HOST2 BIT(7) + +#define SCU_CLKGATE2_FSI BIT(30) +#define SCU_CLKGATE2_MAC4 BIT(21) +#define SCU_CLKGATE2_MAC3 BIT(20) +#define SCU_CLKGATE2_SDIO BIT(4) + +#define SCU_DRAM_HDSHK_SOC_INIT BIT(7) +#define SCU_DRAM_HDSHK_RDY BIT(6) + +#define SCU_CLKSRC1_ECC_RSA_DIV_MASK GENMASK(27, 26) +#define SCU_CLKSRC1_ECC_RSA_DIV_SHIFT 26 +#define SCU_CLKSRC1_PCLK_DIV_MASK GENMASK(25, 23) +#define SCU_CLKSRC1_PCLK_DIV_SHIFT 23 +#define SCU_CLKSRC1_BCLK_DIV_MASK GENMASK(22, 20) +#define SCU_CLKSRC1_BCLK_DIV_SHIFT 20 +#define SCU_CLKSRC1_ECC_RSA BIT(19) +#define SCU_CLKSRC1_MAC_DIV_MASK GENMASK(18, 16) +#define SCU_CLKSRC1_MAC_DIV_SHIFT 16 +#define SCU_CLKSRC1_EMMC_EN BIT(15) +#define SCU_CLKSRC1_EMMC_DIV_MASK GENMASK(14, 12) +#define SCU_CLKSRC1_EMMC_DIV_SHIFT 12 +#define SCU_CLKSRC1_EMMC BIT(11) + +#define SCU_CLKSRC2_RMII12 BIT(19) +#define SCU_CLKSRC2_RMII12_DIV_MASK GENMASK(18, 16) +#define SCU_CLKSRC2_RMII12_DIV_SHIFT 16 +#define SCU_CLKSRC2_UART5 BIT(14) + +#define SCU_CLKSRC4_SDIO_EN BIT(31) +#define SCU_CLKSRC4_SDIO_DIV_MASK GENMASK(30, 28) +#define SCU_CLKSRC4_SDIO_DIV_SHIFT 28 +#define SCU_CLKSRC4_MAC_DIV_MASK GENMASK(26, 24) +#define SCU_CLKSRC4_MAC_DIV_SHIFT 24 +#define SCU_CLKSRC4_RMII34_DIV_MASK GENMASK(18, 16) +#define SCU_CLKSRC4_RMII34_DIV_SHIFT 16 +#define SCU_CLKSRC4_PCLK_DIV_MASK GENMASK(11, 9) +#define SCU_CLKSRC4_PCLK_DIV_SHIFT 9 +#define SCU_CLKSRC4_SDIO BIT(8) +#define SCU_CLKSRC4_UART6 BIT(5) +#define SCU_CLKSRC4_UART4 BIT(3) +#define SCU_CLKSRC4_UART3 BIT(2) +#define SCU_CLKSRC4_UART2 BIT(1) +#define SCU_CLKSRC4_UART1 BIT(0) + +#define SCU_CLKSRC5_UART13 BIT(12) +#define SCU_CLKSRC5_UART12 BIT(11) +#define SCU_CLKSRC5_UART11 BIT(10) +#define SCU_CLKSRC5_UART10 BIT(9) +#define SCU_CLKSRC5_UART9 BIT(8) +#define SCU_CLKSRC5_UART8 BIT(7) +#define SCU_CLKSRC5_UART7 BIT(6) +#define SCU_CLKSRC5_HUXCLK_MASK GENMASK(5, 3) +#define SCU_CLKSRC5_HUXCLK_SHIFT 3 +#define SCU_CLKSRC5_UXCLK_MASK GENMASK(2, 0) +#define SCU_CLKSRC5_UXCLK_SHIFT 0 + +#define SCU_PINCTRL1_EMMC_MASK GENMASK(31, 24) +#define SCU_PINCTRL1_EMMC_SHIFT 24 + +#define SCU_PINCTRL16_MAC4_DRIVING_MASK GENMASK(3, 2) +#define SCU_PINCTRL16_MAC4_DRIVING_SHIFT 2 +#define SCU_PINCTRL16_MAC3_DRIVING_MASK GENMASK(1, 0) +#define SCU_PINCTRL16_MAC3_DRIVING_SHIFT 0 + +#define SCU_HWSTRAP1_CPU_AXI_CLK_RATIO BIT(16) +#define SCU_HWSTRAP1_VGA_MEM_MASK GENMASK(14, 13) +#define SCU_HWSTRAP1_VGA_MEM_SHIFT 13 +#define SCU_HWSTRAP1_AXI_AHB_CLK_RATIO_MASK GENMASK(12, 11) +#define SCU_HWSTRAP1_AXI_AHB_CLK_RATIO_SHIFT 11 +#define SCU_HWSTRAP1_CPU_FREQ_MASK GENMASK(10, 8) +#define SCU_HWSTRAP1_CPU_FREQ_SHIFT 8 +#define SCU_HWSTRAP1_MAC2_INTF BIT(7) +#define SCU_HWSTRAP1_MAC1_INTF BIT(6) + +#define SCU_EFUSE_DIS_DP BIT(17) +#define SCU_EFUSE_DIS_VGA BIT(14) +#define SCU_EFUSE_DIS_PCIE_EP BIT(13) +#define SCU_EFUSE_DIS_USB BIT(12) +#define SCU_EFUSE_DIS_RVAS BIT(10) +#define SCU_EFUSE_DIS_VIDEO_DEC BIT(9) +#define SCU_EFUSE_DIS_VIDEO BIT(8) +#define SCU_EFUSE_DIS_PCIE_RC BIT(7) +#define SCU_EFUSE_DIS_CM3 BIT(6) +#define SCU_EFUSE_DIS_CA7 BIT(5) + +#define SCU_PLL_RST BIT(25) +#define SCU_PLL_BYPASS BIT(24) +#define SCU_PLL_OFF BIT(23) +#define SCU_PLL_DIV_MASK GENMASK(22, 19) +#define SCU_PLL_DIV_SHIFT 19 +#define SCU_PLL_DENUM_MASK GENMASK(18, 13) +#define SCU_PLL_DENUM_SHIFT 13 +#define SCU_PLL_NUM_MASK GENMASK(12, 0) +#define SCU_PLL_NUM_SHIFT 0 + +#define SCU_UART_CLKGEN_N_MASK GENMASK(17, 8) +#define SCU_UART_CLKGEN_N_SHIFT 8 +#define SCU_UART_CLKGEN_R_MASK GENMASK(7, 0) +#define SCU_UART_CLKGEN_R_SHIFT 0 + +#define SCU_HUART_CLKGEN_N_MASK GENMASK(17, 8) +#define SCU_HUART_CLKGEN_N_SHIFT 8 +#define SCU_HUART_CLKGEN_R_MASK GENMASK(7, 0) +#define SCU_HUART_CLKGEN_R_SHIFT 0 + +#define SCU_MISC_CTRL1_UART5_DIV BIT(12) + +#ifndef __ASSEMBLY__ +struct ast2600_scu { + uint32_t prot_key1; /* 0x000 */ + uint32_t chip_id1; /* 0x004 */ + uint32_t rsv_0x08; /* 0x008 */ + uint32_t rsv_0x0c; /* 0x00C */ + uint32_t prot_key2; /* 0x010 */ + uint32_t chip_id2; /* 0x014 */ + uint32_t rsv_0x18[10]; /* 0x018 ~ 0x03C */ + uint32_t modrst_ctrl1; /* 0x040 */ + uint32_t modrst_clr1; /* 0x044 */ + uint32_t rsv_0x48; /* 0x048 */ + uint32_t rsv_0x4C; /* 0x04C */ + uint32_t modrst_ctrl2; /* 0x050 */ + uint32_t modrst_clr2; /* 0x054 */ + uint32_t rsv_0x58; /* 0x058 */ + uint32_t rsv_0x5C; /* 0x05C */ + uint32_t extrst_sel1; /* 0x060 */ + uint32_t sysrst_sts1_1; /* 0x064 */ + uint32_t sysrst_sts1_2; /* 0x068 */ + uint32_t sysrst_sts1_3; /* 0x06C */ + uint32_t extrst_sel2; /* 0x070 */ + uint32_t sysrst_sts2_1; /* 0x074 */ + uint32_t sysrst_sts2_2; /* 0x078 */ + uint32_t stsrst_sts3_2; /* 0x07C */ + uint32_t clkgate_ctrl1; /* 0x080 */ + uint32_t clkgate_clr1; /* 0x084 */ + uint32_t rsv_0x88; /* 0x088 */ + uint32_t rsv_0x8C; /* 0x08C */ + uint32_t clkgate_ctrl2; /* 0x090 */ + uint32_t clkgate_clr2; /* 0x094 */ + uint32_t rsv_0x98[10]; /* 0x098 ~ 0x0BC */ + uint32_t misc_ctrl1; /* 0x0C0 */ + uint32_t misc_ctrl2; /* 0x0C4 */ + uint32_t debug_ctrl1; /* 0x0C8 */ + uint32_t rsv_0xCC; /* 0x0CC */ + uint32_t misc_ctrl3; /* 0x0D0 */ + uint32_t misc_ctrl4; /* 0x0D4 */ + uint32_t debug_ctrl2; /* 0x0D8 */ + uint32_t rsv_0xdc[9]; /* 0x0DC ~ 0x0FC */ + uint32_t dram_hdshk; /* 0x100 */ + uint32_t soc_scratch[3]; /* 0x104 ~ 0x10C */ + uint32_t rsv_0x110[4]; /* 0x110 ~ 0x11C*/ + uint32_t cpu_scratch_wp; /* 0x120 */ + uint32_t rsv_0x124[23]; /* 0x124 */ + uint32_t smp_boot[12]; /* 0x180 */ + uint32_t cpu_scratch[20]; /* 0x1b0 */ + uint32_t hpll; /* 0x200 */ + uint32_t hpll_ext; /* 0x204 */ + uint32_t rsv_0x208[2]; /* 0x208 ~ 0x20C */ + uint32_t apll; /* 0x210 */ + uint32_t apll_ext; /* 0x214 */ + uint32_t rsv_0x218[2]; /* 0x218 ~ 0x21C */ + uint32_t mpll; /* 0x220 */ + uint32_t mpll_ext; /* 0x224 */ + uint32_t rsv_0x228[6]; /* 0x228 ~ 0x23C */ + uint32_t epll; /* 0x240 */ + uint32_t epll_ext; /* 0x244 */ + uint32_t rsv_0x248[6]; /* 0x248 ~ 0x25C */ + uint32_t dpll; /* 0x260 */ + uint32_t dpll_ext; /* 0x264 */ + uint32_t rsv_0x268[38]; /* 0x268 ~ 0x2FC */ + uint32_t clksrc1; /* 0x300 */ + uint32_t clksrc2; /* 0x304 */ + uint32_t clksrc3; /* 0x308 */ + uint32_t rsv_0x30c; /* 0x30C */ + uint32_t clksrc4; /* 0x310 */ + uint32_t clksrc5; /* 0x314 */ + uint32_t rsv_0x318[2]; /* 0x318 ~ 0x31C */ + uint32_t freq_counter_ctrl1; /* 0x320 */ + uint32_t freq_counter_cmp1; /* 0x324 */ + uint32_t rsv_0x328[2]; /* 0x328 ~ 0x32C */ + uint32_t freq_counter_ctrl2; /* 0x330 */ + uint32_t freq_counter_cmp2; /* 0x334 */ + uint32_t uart_clkgen; /* 0x338 */ + uint32_t huart_clkgen; /* 0x33C */ + uint32_t mac12_clk_delay; /* 0x340 */ + uint32_t rsv_0x344; /* 0x344 */ + uint32_t mac12_clk_delay_100M; /* 0x348 */ + uint32_t mac12_clk_delay_10M; /* 0x34C */ + uint32_t mac34_clk_delay; /* 0x350 */ + uint32_t rsv_0x354; /* 0x354 */ + uint32_t mac34_clk_delay_100M; /* 0x358 */ + uint32_t mac34_clk_delay_10M; /* 0x35C */ + uint32_t clkduty_meas_ctrl; /* 0x360 */ + uint32_t clkduty1; /* 0x364 */ + uint32_t clkduty2; /* 0x368 */ + uint32_t clkduty_meas_res; /* 0x36C */ + uint32_t clkduty_meas_ctrl2; /* 0x370 */ + uint32_t clkduty3; /* 0x374 */ + uint32_t rsv_0x378[34]; /* 0x378 ~ 0x3FC */ + uint32_t pinmux1; /* 0x400 */ + uint32_t pinmux2; /* 0x404 */ + uint32_t rsv_0x408; /* 0x408 */ + uint32_t pinmux3; /* 0x40C */ + uint32_t pinmux4; /* 0x410 */ + uint32_t pinmux5; /* 0x414 */ + uint32_t pinmux6; /* 0x418 */ + uint32_t pinmux7; /* 0x41C */ + uint32_t rsv_0x420[4]; /* 0x420 ~ 0x42C */ + uint32_t pinmux8; /* 0x430 */ + uint32_t pinmux9; /* 0x434 */ + uint32_t pinmux10; /* 0x438 */ + uint32_t rsv_0x43c; /* 0x43C */ + uint32_t pinmux12; /* 0x440 */ + uint32_t pinmux13; /* 0x444 */ + uint32_t rsv_0x448[2]; /* 0x448 ~ 0x44C */ + uint32_t pinmux14; /* 0x450 */ + uint32_t pinmux15; /* 0x454 */ + uint32_t pinmux16; /* 0x458 */ + uint32_t rsv_0x45c[21]; /* 0x45C ~ 0x4AC */ + uint32_t pinmux17; /* 0x4B0 */ + uint32_t pinmux18; /* 0x4B4 */ + uint32_t pinmux19; /* 0x4B8 */ + uint32_t pinmux20; /* 0x4BC */ + uint32_t rsv_0x4c0[5]; /* 0x4C0 ~ 0x4D0 */ + uint32_t pinmux22; /* 0x4D4 */ + uint32_t pinmux23; /* 0x4D8 */ + uint32_t rsv_0x4dc[9]; /* 0x4DC ~ 0x4FC */ + uint32_t hwstrap1; /* 0x500 */ + uint32_t hwstrap_clr1; /* 0x504 */ + uint32_t hwstrap_prot1; /* 0x508 */ + uint32_t rsv_0x50c; /* 0x50C */ + uint32_t hwstrap2; /* 0x510 */ + uint32_t hwstrap_clr2; /* 0x514 */ + uint32_t hwstrap_prot2; /* 0x518 */ + uint32_t rsv_0x51c; /* 0x51C */ + uint32_t rng_ctrl; /* 0x520 */ + uint32_t rng_data; /* 0x524 */ + uint32_t rsv_0x528[6]; /* 0x528 ~ 0x53C */ + uint32_t pwr_save_wakeup_en1; /* 0x540 */ + uint32_t pwr_save_wakeup_ctrl1; /* 0x544 */ + uint32_t rsv_0x548[2]; /* 0x548 */ + uint32_t pwr_save_wakeup_en2; /* 0x550 */ + uint32_t pwr_save_wakeup_ctrl2; /* 0x554 */ + uint32_t rsv_0x558[2]; /* 0x558 */ + uint32_t intr1_ctrl_sts; /* 0x560 */ + uint32_t rsv_0x564[3]; /* 0x564 */ + uint32_t intr2_ctrl_sts; /* 0x570 */ + uint32_t rsv_0x574[7]; /* 0x574 ~ 0x58C */ + uint32_t otp_ctrl; /* 0x590 */ + uint32_t efuse; /* 0x594 */ + uint32_t rsv_0x598[6]; /* 0x598 */ + uint32_t chip_unique_id[8]; /* 0x5B0 */ + uint32_t rsv_0x5e0[8]; /* 0x5E0 ~ 0x5FC */ + uint32_t disgpio_in_pull_down0; /* 0x610 */ + uint32_t disgpio_in_pull_down1; /* 0x614 */ + uint32_t disgpio_in_pull_down2; /* 0x618 */ + uint32_t disgpio_in_pull_down3; /* 0x61C */ + uint32_t rsv_0x620[4]; /* 0x620 ~ 0x62C */ + uint32_t disgpio_in_pull_down4; /* 0x630 */ + uint32_t disgpio_in_pull_down5; /* 0x634 */ + uint32_t disgpio_in_pull_down6; /* 0x638 */ + uint32_t rsv_0x63c[5]; /* 0x63C ~ 0x64C */ + uint32_t sli_driving_strength; /* 0x650 */ + uint32_t rsv_0x654[107]; /* 0x654 ~ 0x7FC */ + uint32_t ca7_ctrl1; /* 0x800 */ + uint32_t ca7_ctrl2; /* 0x804 */ + uint32_t ca7_ctrl3; /* 0x808 */ + uint32_t ca7_ctrl4; /* 0x80C */ + uint32_t rsv_0x810[4]; /* 0x810 ~ 0x81C */ + uint32_t ca7_parity_chk; /* 0x820 */ + uint32_t ca7_parity_clr; /* 0x824 */ + uint32_t rsv_0x828[118]; /* 0x828 ~ 0x9FC */ + uint32_t cm3_ctrl; /* 0xA00 */ + uint32_t cm3_base; /* 0xA04 */ + uint32_t cm3_imem_addr; /* 0xA08 */ + uint32_t cm3_dmem_addr; /* 0xA0C */ + uint32_t rsv_0xa10[12]; /* 0xA10 ~ 0xA3C */ + uint32_t cm3_cache_area; /* 0xA40 */ + uint32_t cm3_cache_invd_ctrl; /* 0xA44 */ + uint32_t cm3_cache_func_ctrl; /* 0xA48 */ + uint32_t rsv_0xa4c[108]; /* 0xA4C ~ 0xBFC */ + uint32_t pci_cfg[3]; /* 0xC00 */ + uint32_t rsv_0xc0c[5]; /* 0xC0C ~ 0xC1C */ + uint32_t pcie_cfg; /* 0xC20 */ + uint32_t mmio_decode; /* 0xC24 */ + uint32_t reloc_ctrl_decode[2]; /* 0xC28 */ + uint32_t rsv_0xc30[4]; /* 0xC30 ~ 0xC3C */ + uint32_t mbox_decode; /* 0xC40 */ + uint32_t shared_sram_decode[2]; /* 0xC44 */ + uint32_t bmc_rev_id; /* 0xC4C */ + uint32_t rsv_0xc50[5]; /* 0xC50 ~ 0xC60 */ + uint32_t bmc_device_id; /* 0xC64 */ + uint32_t rsv_0xc68[102]; /* 0xC68 ~ 0xDFC */ + uint32_t vga_scratch1; /* 0xE00 */ + uint32_t vga_scratch2; /* 0xE04 */ + uint32_t vga_scratch3; /* 0xE08 */ + uint32_t vga_scratch4; /* 0xE0C */ + uint32_t rsv_0xe10[4]; /* 0xE10 ~ 0xE1C */ + uint32_t vga_scratch5; /* 0xE20 */ + uint32_t vga_scratch6; /* 0xE24 */ + uint32_t vga_scratch7; /* 0xE28 */ + uint32_t vga_scratch8; /* 0xE2C */ + uint32_t rsv_0xe30[52]; /* 0xE30 ~ 0xEFC */ + uint32_t wr_prot1; /* 0xF00 */ + uint32_t wr_prot2; /* 0xF04 */ + uint32_t wr_prot3; /* 0xF08 */ + uint32_t wr_prot4; /* 0xF0C */ + uint32_t wr_prot5; /* 0xF10 */ + uint32_t wr_prot6; /* 0xF18 */ + uint32_t wr_prot7; /* 0xF1C */ + uint32_t wr_prot8; /* 0xF20 */ + uint32_t wr_prot9; /* 0xF24 */ + uint32_t rsv_0xf28[2]; /* 0xF28 ~ 0xF2C */ + uint32_t wr_prot10; /* 0xF30 */ + uint32_t wr_prot11; /* 0xF34 */ + uint32_t wr_prot12; /* 0xF38 */ + uint32_t wr_prot13; /* 0xF3C */ + uint32_t wr_prot14; /* 0xF40 */ + uint32_t rsv_0xf44; /* 0xF44 */ + uint32_t wr_prot15; /* 0xF48 */ + uint32_t rsv_0xf4c[5]; /* 0xF4C ~ 0xF5C */ + uint32_t wr_prot16; /* 0xF60 */ +}; +#endif +#endif diff --git a/drivers/clk/aspeed/Makefile b/drivers/clk/aspeed/Makefile index 81764b4391..84776e5265 100644 --- a/drivers/clk/aspeed/Makefile +++ b/drivers/clk/aspeed/Makefile @@ -4,3 +4,4 @@ #
obj-$(CONFIG_ASPEED_AST2500) += clk_ast2500.o +obj-$(CONFIG_ASPEED_AST2600) += clk_ast2600.o diff --git a/drivers/clk/aspeed/clk_ast2600.c b/drivers/clk/aspeed/clk_ast2600.c new file mode 100644 index 0000000000..b29c5d0294 --- /dev/null +++ b/drivers/clk/aspeed/clk_ast2600.c @@ -0,0 +1,1173 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) ASPEED Technology Inc. + */ + +#include <common.h> +#include <clk-uclass.h> +#include <dm.h> +#include <asm/io.h> +#include <dm/lists.h> +#include <linux/delay.h> +#include <asm/arch/scu_ast2600.h> +#include <dt-bindings/clock/ast2600-clock.h> +#include <dt-bindings/reset/ast2600-reset.h> + +DECLARE_GLOBAL_DATA_PTR; + +#define CLKIN_25M 25000000UL + +/* MAC Clock Delay settings */ +#define MAC12_DEF_DELAY_1G 0x0041b75d +#define MAC12_DEF_DELAY_100M 0x00417410 +#define MAC12_DEF_DELAY_10M 0x00417410 +#define MAC34_DEF_DELAY_1G 0x0010438a +#define MAC34_DEF_DELAY_100M 0x00104208 +#define MAC34_DEF_DELAY_10M 0x00104208 + +/* + * 3-bit encode of CPU freqeucy + * Some code is duplicated + */ +enum ast2600_cpu_freq { + CPU_FREQ_1200M_1, + CPU_FREQ_1600M_1, + CPU_FREQ_1200M_2, + CPU_FREQ_1600M_2, + CPU_FREQ_800M_1, + CPU_FREQ_800M_2, + CPU_FREQ_800M_3, + CPU_FREQ_800M_4, +}; + +struct ast2600_clk_priv { + struct ast2600_scu *scu; +}; + +/* + * Clock divider/multiplier configuration struct. + * For H-PLL and M-PLL the formula is + * (Output Frequency) = CLKIN * ((M + 1) / (N + 1)) / (P + 1) + * M - Numerator + * N - Denumerator + * P - Post Divider + * They have the same layout in their control register. + * + * D-PLL and D2-PLL have extra divider (OD + 1), which is not + * yet needed and ignored by clock configurations. + */ +union ast2600_pll_reg { + uint32_t w; + struct { + unsigned int m : 13; + unsigned int n : 6; + unsigned int p : 4; + unsigned int off : 1; + unsigned int bypass : 1; + unsigned int reset : 1; + unsigned int reserved : 6; + } b; +}; + +struct ast2600_pll_cfg { + union ast2600_pll_reg reg; + unsigned int ext_reg; +}; + +struct ast2600_pll_desc { + uint32_t in; + uint32_t out; + struct ast2600_pll_cfg cfg; +}; + +static const struct ast2600_pll_desc ast2600_pll_lookup[] = { + { + .in = CLKIN_25M, + .out = 400000000, + .cfg.reg.b.m = 95, + .cfg.reg.b.n = 2, + .cfg.reg.b.p = 1, + .cfg.ext_reg = 0x31, + }, + { + .in = CLKIN_25M, + .out = 200000000, + .cfg.reg.b.m = 127, + .cfg.reg.b.n = 0, + .cfg.reg.b.p = 15, + .cfg.ext_reg = 0x3f, + }, + { + .in = CLKIN_25M, + .out = 334000000, + .cfg.reg.b.m = 667, + .cfg.reg.b.n = 4, + .cfg.reg.b.p = 9, + .cfg.ext_reg = 0x14d, + }, + { + .in = CLKIN_25M, + .out = 1000000000, + .cfg.reg.b.m = 119, + .cfg.reg.b.n = 2, + .cfg.reg.b.p = 0, + .cfg.ext_reg = 0x3d, + }, + { + .in = CLKIN_25M, + .out = 50000000, + .cfg.reg.b.m = 95, + .cfg.reg.b.n = 2, + .cfg.reg.b.p = 15, + .cfg.ext_reg = 0x31, + }, +}; + +/* divisor tables */ +static uint32_t axi_ahb_div0_table[] = { + 3, 2, 3, 4, +}; + +static uint32_t axi_ahb_div1_table[] = { + 3, 4, 6, 8, +}; + +static uint32_t axi_ahb_default_table[] = { + 3, 4, 3, 4, 2, 2, 2, 2, +}; + +extern uint32_t ast2600_get_pll_rate(struct ast2600_scu *scu, int pll_idx) +{ + union ast2600_pll_reg pll_reg; + uint32_t hwstrap1; + uint32_t cpu_freq; + uint32_t mul = 1, div = 1; + + switch (pll_idx) { + case ASPEED_CLK_APLL: + pll_reg.w = readl(&scu->apll); + break; + case ASPEED_CLK_DPLL: + pll_reg.w = readl(&scu->dpll); + break; + case ASPEED_CLK_EPLL: + pll_reg.w = readl(&scu->epll); + break; + case ASPEED_CLK_HPLL: + pll_reg.w = readl(&scu->hpll); + break; + case ASPEED_CLK_MPLL: + pll_reg.w = readl(&scu->mpll); + break; + } + + if (!pll_reg.b.bypass) { + /* F = 25Mhz * [(M + 2) / (n + 1)] / (p + 1) + * HPLL Numerator (M) = fix 0x5F when SCU500[10]=1 + * Fixed 0xBF when SCU500[10]=0 and SCU500[8]=1 + * SCU200[12:0] (default 0x8F) when SCU510[10]=0 and SCU510[8]=0 + * HPLL Denumerator (N) = SCU200[18:13] (default 0x2) + * HPLL Divider (P) = SCU200[22:19] (default 0x0) + * HPLL Bandwidth Adj (NB) = fix 0x2F when SCU500[10]=1 + * Fixed 0x5F when SCU500[10]=0 and SCU500[8]=1 + * SCU204[11:0] (default 0x31) when SCU500[10]=0 and SCU500[8]=0 + */ + if (pll_idx == ASPEED_CLK_HPLL) { + hwstrap1 = readl(&scu->hwstrap1); + cpu_freq = (hwstrap1 & SCU_HWSTRAP1_CPU_FREQ_MASK) >> + SCU_HWSTRAP1_CPU_FREQ_SHIFT; + + switch (cpu_freq) { + case CPU_FREQ_800M_1: + case CPU_FREQ_800M_2: + case CPU_FREQ_800M_3: + case CPU_FREQ_800M_4: + pll_reg.b.m = 0x5f; + break; + case CPU_FREQ_1600M_1: + case CPU_FREQ_1600M_2: + pll_reg.b.m = 0xbf; + break; + default: + pll_reg.b.m = 0x8f; + break; + } + } + + mul = (pll_reg.b.m + 1) / (pll_reg.b.n + 1); + div = (pll_reg.b.p + 1); + } + + return ((CLKIN_25M * mul) / div); +} + +static uint32_t ast2600_get_hclk_rate(struct ast2600_scu *scu) +{ + uint32_t rate = ast2600_get_pll_rate(scu, ASPEED_CLK_HPLL); + uint32_t axi_div, ahb_div; + uint32_t hwstrap1 = readl(&scu->hwstrap1); + uint32_t cpu_freq = (hwstrap1 & SCU_HWSTRAP1_CPU_FREQ_MASK) >> + SCU_HWSTRAP1_CPU_FREQ_SHIFT; + uint32_t axi_ahb_ratio = (hwstrap1 & SCU_HWSTRAP1_AXI_AHB_CLK_RATIO_MASK) >> + SCU_HWSTRAP1_AXI_AHB_CLK_RATIO_SHIFT; + + if (hwstrap1 & SCU_HWSTRAP1_CPU_AXI_CLK_RATIO) { + axi_ahb_div1_table[0] = axi_ahb_default_table[cpu_freq] * 2; + axi_div = 1; + ahb_div = axi_ahb_div1_table[axi_ahb_ratio]; + } else { + axi_ahb_div0_table[0] = axi_ahb_default_table[cpu_freq]; + axi_div = 2; + ahb_div = axi_ahb_div0_table[axi_ahb_ratio]; + } + + return (rate / axi_div / ahb_div); +} + +static uint32_t ast2600_get_bclk_rate(struct ast2600_scu *scu) +{ + uint32_t rate = ast2600_get_pll_rate(scu, ASPEED_CLK_HPLL); + uint32_t clksrc1 = readl(&scu->clksrc1); + uint32_t bclk_div = (clksrc1 & SCU_CLKSRC1_BCLK_DIV_MASK) >> + SCU_CLKSRC1_BCLK_DIV_SHIFT; + + return (rate / ((bclk_div + 1) * 4)); +} + +static uint32_t ast2600_get_pclk1_rate(struct ast2600_scu *scu) +{ + uint32_t rate = ast2600_get_pll_rate(scu, ASPEED_CLK_HPLL); + uint32_t clksrc1 = readl(&scu->clksrc1); + uint32_t pclk_div = (clksrc1 & SCU_CLKSRC1_PCLK_DIV_MASK) >> + SCU_CLKSRC1_PCLK_DIV_SHIFT; + + return (rate / ((pclk_div + 1) * 4)); +} + +static uint32_t ast2600_get_pclk2_rate(struct ast2600_scu *scu) +{ + uint32_t rate = ast2600_get_hclk_rate(scu); + uint32_t clksrc4 = readl(&scu->clksrc4); + uint32_t pclk_div = (clksrc4 & SCU_CLKSRC4_PCLK_DIV_MASK) >> + SCU_CLKSRC4_PCLK_DIV_SHIFT; + + return (rate / ((pclk_div + 1) * 2)); +} + +static uint32_t ast2600_get_uxclk_in_rate(struct ast2600_scu *scu) +{ + uint32_t rate = 0; + uint32_t clksrc5 = readl(&scu->clksrc5); + uint32_t uxclk = (clksrc5 & SCU_CLKSRC5_UXCLK_MASK) >> + SCU_CLKSRC5_UXCLK_SHIFT; + + switch (uxclk) { + case 0: + rate = ast2600_get_pll_rate(scu, ASPEED_CLK_APLL) / 4; + break; + case 1: + rate = ast2600_get_pll_rate(scu, ASPEED_CLK_APLL) / 2; + break; + case 2: + rate = ast2600_get_pll_rate(scu, ASPEED_CLK_APLL); + break; + case 3: + rate = ast2600_get_hclk_rate(scu); + break; + } + + return rate; +} + +static uint32_t ast2600_get_huxclk_in_rate(struct ast2600_scu *scu) +{ + uint32_t rate = 0; + uint32_t clksrc5 = readl(&scu->clksrc5); + uint32_t huxclk = (clksrc5 & SCU_CLKSRC5_HUXCLK_MASK) >> + SCU_CLKSRC5_HUXCLK_SHIFT; + + switch (huxclk) { + case 0: + rate = ast2600_get_pll_rate(scu, ASPEED_CLK_APLL) / 4; + break; + case 1: + rate = ast2600_get_pll_rate(scu, ASPEED_CLK_APLL) / 2; + break; + case 2: + rate = ast2600_get_pll_rate(scu, ASPEED_CLK_APLL); + break; + case 3: + rate = ast2600_get_hclk_rate(scu); + break; + } + + return rate; +} + +static uint32_t ast2600_get_uart_uxclk_rate(struct ast2600_scu *scu) +{ + uint32_t rate = ast2600_get_uxclk_in_rate(scu); + uint32_t uart_clkgen = readl(&scu->uart_clkgen); + uint32_t n = (uart_clkgen & SCU_UART_CLKGEN_N_MASK) >> + SCU_UART_CLKGEN_N_SHIFT; + uint32_t r = (uart_clkgen & SCU_UART_CLKGEN_R_MASK) >> + SCU_UART_CLKGEN_R_SHIFT; + + return ((rate * r) / (n * 2)); +} + +static uint32_t ast2600_get_uart_huxclk_rate(struct ast2600_scu *scu) +{ + uint32_t rate = ast2600_get_huxclk_in_rate(scu); + uint32_t huart_clkgen = readl(&scu->huart_clkgen); + uint32_t n = (huart_clkgen & SCU_HUART_CLKGEN_N_MASK) >> + SCU_HUART_CLKGEN_N_SHIFT; + uint32_t r = (huart_clkgen & SCU_HUART_CLKGEN_R_MASK) >> + SCU_HUART_CLKGEN_R_SHIFT; + + return ((rate * r) / (n * 2)); +} + +static uint32_t ast2600_get_sdio_clk_rate(struct ast2600_scu *scu) +{ + uint32_t rate = 0; + uint32_t clksrc4 = readl(&scu->clksrc4); + uint32_t sdio_div = (clksrc4 & SCU_CLKSRC4_SDIO_DIV_MASK) >> + SCU_CLKSRC4_SDIO_DIV_SHIFT; + + if (clksrc4 & SCU_CLKSRC4_SDIO) + rate = ast2600_get_pll_rate(scu, ASPEED_CLK_APLL); + else + rate = ast2600_get_hclk_rate(scu); + + return (rate / ((sdio_div + 1) * 2)); +} + +static uint32_t ast2600_get_emmc_clk_rate(struct ast2600_scu *scu) +{ + uint32_t rate = ast2600_get_pll_rate(scu, ASPEED_CLK_HPLL); + uint32_t clksrc1 = readl(&scu->clksrc1); + uint32_t emmc_div = (clksrc1 & SCU_CLKSRC1_EMMC_DIV_MASK) >> + SCU_CLKSRC1_EMMC_DIV_SHIFT; + + return (rate / ((emmc_div + 1) * 4)); +} + +static uint32_t ast2600_get_uart_clk_rate(struct ast2600_scu *scu, int uart_idx) +{ + uint32_t rate = 0; + uint32_t uart5_clk = 0; + uint32_t clksrc2 = readl(&scu->clksrc2); + uint32_t clksrc4 = readl(&scu->clksrc4); + uint32_t clksrc5 = readl(&scu->clksrc5); + uint32_t misc_ctrl1 = readl(&scu->misc_ctrl1); + + switch (uart_idx) { + case 1: + case 2: + case 3: + case 4: + case 6: + if (clksrc4 & BIT(uart_idx - 1)) + rate = ast2600_get_uart_huxclk_rate(scu); + else + rate = ast2600_get_uart_uxclk_rate(scu); + break; + case 5: + /* + * SCU0C[12] and SCU304[14] together decide + * the UART5 clock generation + */ + if (misc_ctrl1 & SCU_MISC_CTRL1_UART5_DIV) + uart5_clk = 0x1 << 1; + + if (clksrc2 & SCU_CLKSRC2_UART5) + uart5_clk |= 0x1; + + switch (uart5_clk) { + case 0: + rate = 24000000; + break; + case 1: + rate = 192000000; + break; + case 2: + rate = 24000000 / 13; + break; + case 3: + rate = 192000000 / 13; + break; + } + + break; + case 7: + case 8: + case 9: + case 10: + case 11: + case 12: + case 13: + if (clksrc5 & BIT(uart_idx - 1)) + rate = ast2600_get_uart_huxclk_rate(scu); + else + rate = ast2600_get_uart_uxclk_rate(scu); + break; + } + + return rate; +} + +static ulong ast2600_clk_get_rate(struct clk *clk) +{ + struct ast2600_clk_priv *priv = dev_get_priv(clk->dev); + ulong rate = 0; + + switch (clk->id) { + case ASPEED_CLK_HPLL: + case ASPEED_CLK_EPLL: + case ASPEED_CLK_DPLL: + case ASPEED_CLK_MPLL: + case ASPEED_CLK_APLL: + rate = ast2600_get_pll_rate(priv->scu, clk->id); + break; + case ASPEED_CLK_AHB: + rate = ast2600_get_hclk_rate(priv->scu); + break; + case ASPEED_CLK_APB1: + rate = ast2600_get_pclk1_rate(priv->scu); + break; + case ASPEED_CLK_APB2: + rate = ast2600_get_pclk2_rate(priv->scu); + break; + case ASPEED_CLK_GATE_UART1CLK: + rate = ast2600_get_uart_clk_rate(priv->scu, 1); + break; + case ASPEED_CLK_GATE_UART2CLK: + rate = ast2600_get_uart_clk_rate(priv->scu, 2); + break; + case ASPEED_CLK_GATE_UART3CLK: + rate = ast2600_get_uart_clk_rate(priv->scu, 3); + break; + case ASPEED_CLK_GATE_UART4CLK: + rate = ast2600_get_uart_clk_rate(priv->scu, 4); + break; + case ASPEED_CLK_GATE_UART5CLK: + rate = ast2600_get_uart_clk_rate(priv->scu, 5); + break; + case ASPEED_CLK_BCLK: + rate = ast2600_get_bclk_rate(priv->scu); + break; + case ASPEED_CLK_SDIO: + rate = ast2600_get_sdio_clk_rate(priv->scu); + break; + case ASPEED_CLK_EMMC: + rate = ast2600_get_emmc_clk_rate(priv->scu); + break; + case ASPEED_CLK_UARTX: + rate = ast2600_get_uart_uxclk_rate(priv->scu); + break; + case ASPEED_CLK_HUARTX: + rate = ast2600_get_uart_huxclk_rate(priv->scu); + break; + default: + debug("can't get clk rate\n"); + return -ENOENT; + } + + return rate; +} + +/** + * @brief lookup PLL divider config by input/output rate + * @param[in] *pll - PLL descriptor + * @return true - if PLL divider config is found, false - else + * The function caller shall fill "pll->in" and "pll->out", + * then this function will search the lookup table + * to find a valid PLL divider configuration. + */ +static bool ast2600_search_clock_config(struct ast2600_pll_desc *pll) +{ + uint32_t i; + const struct ast2600_pll_desc *def_desc; + bool is_found = false; + + for (i = 0; i < ARRAY_SIZE(ast2600_pll_lookup); i++) { + def_desc = &ast2600_pll_lookup[i]; + + if (def_desc->in == pll->in && def_desc->out == pll->out) { + is_found = true; + pll->cfg.reg.w = def_desc->cfg.reg.w; + pll->cfg.ext_reg = def_desc->cfg.ext_reg; + break; + } + } + return is_found; +} + +static uint32_t ast2600_configure_pll(struct ast2600_scu *scu, + struct ast2600_pll_cfg *p_cfg, int pll_idx) +{ + uint32_t addr, addr_ext; + uint32_t reg; + + switch (pll_idx) { + case ASPEED_CLK_HPLL: + addr = (uint32_t)(&scu->hpll); + addr_ext = (uint32_t)(&scu->hpll_ext); + break; + case ASPEED_CLK_MPLL: + addr = (uint32_t)(&scu->mpll); + addr_ext = (uint32_t)(&scu->mpll_ext); + break; + case ASPEED_CLK_DPLL: + addr = (uint32_t)(&scu->dpll); + addr_ext = (uint32_t)(&scu->dpll_ext); + break; + case ASPEED_CLK_EPLL: + addr = (uint32_t)(&scu->epll); + addr_ext = (uint32_t)(&scu->epll_ext); + break; + case ASPEED_CLK_APLL: + addr = (uint32_t)(&scu->apll); + addr_ext = (uint32_t)(&scu->apll_ext); + break; + default: + debug("unknown PLL index\n"); + return 1; + } + + p_cfg->reg.b.bypass = 0; + p_cfg->reg.b.off = 1; + p_cfg->reg.b.reset = 1; + + reg = readl(addr); + reg &= ~GENMASK(25, 0); + reg |= p_cfg->reg.w; + writel(reg, addr); + + /* write extend parameter */ + writel(p_cfg->ext_reg, addr_ext); + udelay(100); + p_cfg->reg.b.off = 0; + p_cfg->reg.b.reset = 0; + reg &= ~GENMASK(25, 0); + reg |= p_cfg->reg.w; + writel(reg, addr); + while (!(readl(addr_ext) & BIT(31))) + ; + + return 0; +} + +static uint32_t ast2600_configure_ddr(struct ast2600_scu *scu, ulong rate) +{ + struct ast2600_pll_desc mpll; + + mpll.in = CLKIN_25M; + mpll.out = rate; + if (ast2600_search_clock_config(&mpll) == false) { + printf("error!! unable to find valid DDR clock setting\n"); + return 0; + } + ast2600_configure_pll(scu, &mpll.cfg, ASPEED_CLK_MPLL); + + return ast2600_get_pll_rate(scu, ASPEED_CLK_MPLL); +} + +static ulong ast2600_clk_set_rate(struct clk *clk, ulong rate) +{ + struct ast2600_clk_priv *priv = dev_get_priv(clk->dev); + ulong new_rate; + + switch (clk->id) { + case ASPEED_CLK_MPLL: + new_rate = ast2600_configure_ddr(priv->scu, rate); + break; + default: + return -ENOENT; + } + + return new_rate; +} + +static uint32_t ast2600_configure_mac12_clk(struct ast2600_scu *scu) +{ + /* scu340[25:0]: 1G default delay */ + clrsetbits_le32(&scu->mac12_clk_delay, GENMASK(25, 0), + MAC12_DEF_DELAY_1G); + + /* set 100M/10M default delay */ + writel(MAC12_DEF_DELAY_100M, &scu->mac12_clk_delay_100M); + writel(MAC12_DEF_DELAY_10M, &scu->mac12_clk_delay_10M); + + /* MAC AHB = HPLL / 6 */ + clrsetbits_le32(&scu->clksrc1, SCU_CLKSRC1_MAC_DIV_MASK, + (0x2 << SCU_CLKSRC1_MAC_DIV_SHIFT)); + + return 0; +} + +static uint32_t ast2600_configure_mac34_clk(struct ast2600_scu *scu) +{ + /* + * scu350[31] RGMII 125M source: 0 = from IO pin + * scu350[25:0] MAC 1G delay + */ + clrsetbits_le32(&scu->mac34_clk_delay, (BIT(31) | GENMASK(25, 0)), + MAC34_DEF_DELAY_1G); + writel(MAC34_DEF_DELAY_100M, &scu->mac34_clk_delay_100M); + writel(MAC34_DEF_DELAY_10M, &scu->mac34_clk_delay_10M); + + /* + * clock source seletion and divider + * scu310[26:24] : MAC AHB bus clock = HCLK / 2 + * scu310[18:16] : RMII 50M = HCLK_200M / 4 + */ + clrsetbits_le32(&scu->clksrc4, + (SCU_CLKSRC4_MAC_DIV_MASK | SCU_CLKSRC4_RMII34_DIV_MASK), + ((0x0 << SCU_CLKSRC4_MAC_DIV_SHIFT) + | (0x3 << SCU_CLKSRC4_RMII34_DIV_SHIFT))); + + /* + * set driving strength + * scu458[3:2] : MAC4 driving strength + * scu458[1:0] : MAC3 driving strength + */ + clrsetbits_le32(&scu->pinmux16, + SCU_PINCTRL16_MAC4_DRIVING_MASK | SCU_PINCTRL16_MAC3_DRIVING_MASK, + (0x3 << SCU_PINCTRL16_MAC4_DRIVING_SHIFT) + | (0x3 << SCU_PINCTRL16_MAC3_DRIVING_SHIFT)); + + return 0; +} + +/** + * ast2600 RGMII clock source tree + * 125M from external PAD -------->|\ + * HPLL -->|\ | |---->RGMII 125M for MAC#1 & MAC#2 + * | |---->| divider |---->|/ + + * EPLL -->|/ | + * | + * +---------<-----------|RGMIICK PAD output enable|<-------------+ + * | + * +--------------------------->|\ + * | |----> RGMII 125M for MAC#3 & MAC#4 + * HCLK 200M ---->|divider|---->|/ + * To simplify the control flow: + * 1. RGMII 1/2 always use EPLL as the internal clock source + * 2. RGMII 3/4 always use RGMIICK pad as the RGMII 125M source + * 125M from external PAD -------->|\ + * | |---->RGMII 125M for MAC#1 & MAC#2 + * EPLL---->| divider |--->|/ + + * | + * +<--------------------|RGMIICK PAD output enable|<-------------+ + * | + * +--------------------------->RGMII 125M for MAC#3 & MAC#4 + */ +#define RGMIICK_SRC_PAD 0 +#define RGMIICK_SRC_EPLL 1 /* recommended */ +#define RGMIICK_SRC_HPLL 2 + +#define RGMIICK_DIV2 1 +#define RGMIICK_DIV3 2 +#define RGMIICK_DIV4 3 +#define RGMIICK_DIV5 4 +#define RGMIICK_DIV6 5 +#define RGMIICK_DIV7 6 +#define RGMIICK_DIV8 7 /* recommended */ + +#define RMIICK_DIV4 0 +#define RMIICK_DIV8 1 +#define RMIICK_DIV12 2 +#define RMIICK_DIV16 3 +#define RMIICK_DIV20 4 /* recommended */ +#define RMIICK_DIV24 5 +#define RMIICK_DIV28 6 +#define RMIICK_DIV32 7 + +struct ast2600_mac_clk_div { + uint32_t src; /* 0=external PAD, 1=internal PLL */ + uint32_t fin; /* divider input speed */ + uint32_t n; /* 0=div2, 1=div2, 2=div3, 3=div4,...,7=div8 */ + uint32_t fout; /* fout = fin / n */ +}; + +struct ast2600_mac_clk_div rgmii_clk_defconfig = { + .src = ASPEED_CLK_EPLL, + .fin = 1000000000, + .n = RGMIICK_DIV8, + .fout = 125000000, +}; + +struct ast2600_mac_clk_div rmii_clk_defconfig = { + .src = ASPEED_CLK_EPLL, + .fin = 1000000000, + .n = RMIICK_DIV20, + .fout = 50000000, +}; + +static void ast2600_init_mac_pll(struct ast2600_scu *p_scu, + struct ast2600_mac_clk_div *p_cfg) +{ + struct ast2600_pll_desc pll; + + pll.in = CLKIN_25M; + pll.out = p_cfg->fin; + if (ast2600_search_clock_config(&pll) == false) { + pr_err("unable to find valid ETHNET MAC clock setting\n"); + return; + } + ast2600_configure_pll(p_scu, &pll.cfg, p_cfg->src); +} + +static void ast2600_init_rgmii_clk(struct ast2600_scu *p_scu, + struct ast2600_mac_clk_div *p_cfg) +{ + uint32_t reg_304 = readl(&p_scu->clksrc2); + uint32_t reg_340 = readl(&p_scu->mac12_clk_delay); + uint32_t reg_350 = readl(&p_scu->mac34_clk_delay); + + reg_340 &= ~GENMASK(31, 29); + /* scu340[28]: RGMIICK PAD output enable (to MAC 3/4) */ + reg_340 |= BIT(28); + if (p_cfg->src == ASPEED_CLK_EPLL || p_cfg->src == ASPEED_CLK_HPLL) { + /* + * re-init PLL if the current PLL output frequency doesn't match + * the divider setting + */ + if (p_cfg->fin != ast2600_get_pll_rate(p_scu, p_cfg->src)) + ast2600_init_mac_pll(p_scu, p_cfg); + /* scu340[31]: select RGMII 125M from internal source */ + reg_340 |= BIT(31); + } + + reg_304 &= ~GENMASK(23, 20); + + /* set clock divider */ + reg_304 |= (p_cfg->n & 0x7) << 20; + + /* select internal clock source */ + if (p_cfg->src == ASPEED_CLK_HPLL) + reg_304 |= BIT(23); + + /* RGMII 3/4 clock source select */ + reg_350 &= ~BIT(31); + + writel(reg_304, &p_scu->clksrc2); + writel(reg_340, &p_scu->mac12_clk_delay); + writel(reg_350, &p_scu->mac34_clk_delay); +} + +/** + * ast2600 RMII/NCSI clock source tree + * HPLL -->|\ + * | |---->| divider |----> RMII 50M for MAC#1 & MAC#2 + * EPLL -->|/ + * HCLK(SCLICLK)---->| divider |----> RMII 50M for MAC#3 & MAC#4 + */ +static void ast2600_init_rmii_clk(struct ast2600_scu *p_scu, + struct ast2600_mac_clk_div *p_cfg) +{ + uint32_t clksrc2 = readl(&p_scu->clksrc2); + uint32_t clksrc4 = readl(&p_scu->clksrc4); + + if (p_cfg->src == ASPEED_CLK_EPLL || p_cfg->src == ASPEED_CLK_HPLL) { + /* + * re-init PLL if the current PLL output frequency doesn't match + * the divider setting + */ + if (p_cfg->fin != ast2600_get_pll_rate(p_scu, p_cfg->src)) + ast2600_init_mac_pll(p_scu, p_cfg); + } + + clksrc2 &= ~(SCU_CLKSRC2_RMII12 | SCU_CLKSRC2_RMII12_DIV_MASK); + + /* set RMII 1/2 clock divider */ + clksrc2 |= (p_cfg->n & 0x7) << 16; + + /* RMII clock source selection */ + if (p_cfg->src == ASPEED_CLK_HPLL) + clksrc2 |= SCU_CLKSRC2_RMII12; + + /* set RMII 3/4 clock divider */ + clksrc4 &= ~SCU_CLKSRC4_RMII34_DIV_MASK; + clksrc4 |= (0x3 << SCU_CLKSRC4_RMII34_DIV_SHIFT); + + writel(clksrc2, &p_scu->clksrc2); + writel(clksrc4, &p_scu->clksrc4); +} + +static uint32_t ast2600_configure_mac(struct ast2600_scu *scu, int index) +{ + uint32_t reset_bit; + uint32_t clkgate_bit; + + switch (index) { + case 1: + reset_bit = BIT(ASPEED_RESET_MAC1); + clkgate_bit = SCU_CLKGATE1_MAC1; + writel(reset_bit, &scu->modrst_ctrl1); + udelay(100); + writel(clkgate_bit, &scu->clkgate_clr1); + mdelay(10); + writel(reset_bit, &scu->modrst_clr1); + break; + case 2: + reset_bit = BIT(ASPEED_RESET_MAC2); + clkgate_bit = SCU_CLKGATE1_MAC2; + writel(reset_bit, &scu->modrst_ctrl1); + udelay(100); + writel(clkgate_bit, &scu->clkgate_clr1); + mdelay(10); + writel(reset_bit, &scu->modrst_clr1); + break; + case 3: + reset_bit = BIT(ASPEED_RESET_MAC3 - 32); + clkgate_bit = SCU_CLKGATE2_MAC3; + writel(reset_bit, &scu->modrst_ctrl2); + udelay(100); + writel(clkgate_bit, &scu->clkgate_clr2); + mdelay(10); + writel(reset_bit, &scu->modrst_clr2); + break; + case 4: + reset_bit = BIT(ASPEED_RESET_MAC4 - 32); + clkgate_bit = SCU_CLKGATE2_MAC4; + writel(reset_bit, &scu->modrst_ctrl2); + udelay(100); + writel(clkgate_bit, &scu->clkgate_clr2); + mdelay(10); + writel(reset_bit, &scu->modrst_clr2); + break; + default: + return -EINVAL; + } + + return 0; +} + +static void ast2600_configure_rsa_ecc_clk(struct ast2600_scu *scu) +{ + uint32_t clksrc1 = readl(&scu->clksrc1); + + /* Configure RSA clock = HPLL/3 */ + clksrc1 |= SCU_CLKSRC1_ECC_RSA; + clksrc1 &= ~SCU_CLKSRC1_ECC_RSA_DIV_MASK; + clksrc1 |= (2 << SCU_CLKSRC1_ECC_RSA_DIV_SHIFT); + + writel(clksrc1, &scu->clksrc1); +} + +static ulong ast2600_enable_sdclk(struct ast2600_scu *scu) +{ + uint32_t reset_bit; + uint32_t clkgate_bit; + + reset_bit = BIT(ASPEED_RESET_SD - 32); + clkgate_bit = SCU_CLKGATE2_SDIO; + + writel(reset_bit, &scu->modrst_ctrl2); + udelay(100); + writel(clkgate_bit, &scu->clkgate_clr2); + mdelay(10); + writel(reset_bit, &scu->modrst_clr2); + + return 0; +} + +static ulong ast2600_enable_extsdclk(struct ast2600_scu *scu) +{ + int i = 0; + uint32_t div = 0; + uint32_t rate = 0; + uint32_t clksrc4 = readl(&scu->clksrc4); + + /* + * ast2600 SD controller max clk is 200Mhz + * use apll for clock source 800/4 = 200 + * controller max is 200mhz + */ + rate = ast2600_get_pll_rate(scu, ASPEED_CLK_APLL); + for (i = 0; i < 8; i++) { + div = (i + 1) * 2; + if ((rate / div) <= 200000000) + break; + } + clksrc4 &= ~SCU_CLKSRC4_SDIO_DIV_MASK; + clksrc4 |= (i << SCU_CLKSRC4_SDIO_DIV_SHIFT); + clksrc4 |= SCU_CLKSRC4_SDIO; + writel(clksrc4, &scu->clksrc4); + + setbits_le32(&scu->clksrc4, SCU_CLKSRC4_SDIO_EN); + + return 0; +} + +static ulong ast2600_enable_emmcclk(struct ast2600_scu *scu) +{ + uint32_t reset_bit; + uint32_t clkgate_bit; + + reset_bit = BIT(ASPEED_RESET_EMMC); + clkgate_bit = SCU_CLKGATE1_EMMC; + + writel(reset_bit, &scu->modrst_ctrl1); + udelay(100); + writel(clkgate_bit, &scu->clkgate_clr1); + mdelay(10); + writel(reset_bit, &scu->modrst_clr1); + + return 0; +} + +static ulong ast2600_enable_extemmcclk(struct ast2600_scu *scu) +{ + int i = 0; + uint32_t div = 0; + uint32_t rate = 0; + uint32_t clksrc1 = readl(&scu->clksrc1); + + /* + * ast2600 eMMC controller max clk is 200Mhz + * HPll->1/2->|\ + * |->SCU300[11]->SCU300[14:12][1/N] + + * MPLL------>|/ | + * +----------------------------------------------+ + * | + * +---------> EMMC12C[15:8][1/N]-> eMMC clk + */ + rate = ast2600_get_pll_rate(scu, ASPEED_CLK_MPLL); + for (i = 0; i < 8; i++) { + div = (i + 1) * 2; + if ((rate / div) <= 200000000) + break; + } + + clksrc1 &= ~SCU_CLKSRC1_EMMC_DIV_MASK; + clksrc1 |= (i << SCU_CLKSRC1_EMMC_DIV_SHIFT); + clksrc1 |= SCU_CLKSRC1_EMMC; + writel(clksrc1, &scu->clksrc1); + + setbits_le32(&scu->clksrc1, SCU_CLKSRC1_EMMC_EN); + + return 0; +} + +static ulong ast2600_enable_fsiclk(struct ast2600_scu *scu) +{ + uint32_t reset_bit; + uint32_t clkgate_bit; + + reset_bit = BIT(ASPEED_RESET_FSI % 32); + clkgate_bit = SCU_CLKGATE2_FSI; + + /* The FSI clock is shared between masters. If it's already on + * don't touch it, as that will reset the existing master. + */ + if (!(readl(&scu->clkgate_ctrl2) & clkgate_bit)) { + debug("%s: already running, not touching it\n", __func__); + return 0; + } + + writel(reset_bit, &scu->modrst_ctrl2); + udelay(100); + writel(clkgate_bit, &scu->clkgate_clr2); + mdelay(10); + writel(reset_bit, &scu->modrst_clr2); + + return 0; +} + +static ulong ast2600_enable_usbahclk(struct ast2600_scu *scu) +{ + uint32_t reset_bit; + uint32_t clkgate_bit; + + reset_bit = BIT(ASPEED_RESET_EHCI_P1); + clkgate_bit = SCU_CLKGATE1_USB_HUB; + + writel(reset_bit, &scu->modrst_ctrl1); + udelay(100); + writel(clkgate_bit, &scu->clkgate_ctrl1); + mdelay(20); + writel(reset_bit, &scu->modrst_clr1); + + return 0; +} + +static ulong ast2600_enable_usbbhclk(struct ast2600_scu *scu) +{ + uint32_t reset_bit; + uint32_t clkgate_bit; + + reset_bit = BIT(ASPEED_RESET_EHCI_P2); + clkgate_bit = SCU_CLKGATE1_USB_HOST2; + + writel(reset_bit, &scu->modrst_ctrl1); + udelay(100); + writel(clkgate_bit, &scu->clkgate_clr1); + mdelay(20); + writel(reset_bit, &scu->modrst_clr1); + + return 0; +} + +static int ast2600_clk_enable(struct clk *clk) +{ + struct ast2600_clk_priv *priv = dev_get_priv(clk->dev); + + switch (clk->id) { + case ASPEED_CLK_GATE_MAC1CLK: + ast2600_configure_mac(priv->scu, 1); + break; + case ASPEED_CLK_GATE_MAC2CLK: + ast2600_configure_mac(priv->scu, 2); + break; + case ASPEED_CLK_GATE_MAC3CLK: + ast2600_configure_mac(priv->scu, 3); + break; + case ASPEED_CLK_GATE_MAC4CLK: + ast2600_configure_mac(priv->scu, 4); + break; + case ASPEED_CLK_GATE_SDCLK: + ast2600_enable_sdclk(priv->scu); + break; + case ASPEED_CLK_GATE_SDEXTCLK: + ast2600_enable_extsdclk(priv->scu); + break; + case ASPEED_CLK_GATE_EMMCCLK: + ast2600_enable_emmcclk(priv->scu); + break; + case ASPEED_CLK_GATE_EMMCEXTCLK: + ast2600_enable_extemmcclk(priv->scu); + break; + case ASPEED_CLK_GATE_FSICLK: + ast2600_enable_fsiclk(priv->scu); + break; + case ASPEED_CLK_GATE_USBPORT1CLK: + ast2600_enable_usbahclk(priv->scu); + break; + case ASPEED_CLK_GATE_USBPORT2CLK: + ast2600_enable_usbbhclk(priv->scu); + break; + default: + pr_err("can't enable clk\n"); + return -ENOENT; + } + + return 0; +} + +struct clk_ops ast2600_clk_ops = { + .get_rate = ast2600_clk_get_rate, + .set_rate = ast2600_clk_set_rate, + .enable = ast2600_clk_enable, +}; + +static int ast2600_clk_probe(struct udevice *dev) +{ + struct ast2600_clk_priv *priv = dev_get_priv(dev); + + priv->scu = devfdt_get_addr_ptr(dev); + if (IS_ERR(priv->scu)) + return PTR_ERR(priv->scu); + + ast2600_init_rgmii_clk(priv->scu, &rgmii_clk_defconfig); + ast2600_init_rmii_clk(priv->scu, &rmii_clk_defconfig); + ast2600_configure_mac12_clk(priv->scu); + ast2600_configure_mac34_clk(priv->scu); + ast2600_configure_rsa_ecc_clk(priv->scu); + + return 0; +} + +static int ast2600_clk_bind(struct udevice *dev) +{ + int ret; + + /* The reset driver does not have a device node, so bind it here */ + ret = device_bind_driver(gd->dm_root, "ast_sysreset", "reset", &dev); + if (ret) + debug("Warning: No reset driver: ret=%d\n", ret); + + return 0; +} + +struct aspeed_clks { + ulong id; + const char *name; +}; + +static struct aspeed_clks aspeed_clk_names[] = { + { ASPEED_CLK_HPLL, "hpll" }, + { ASPEED_CLK_MPLL, "mpll" }, + { ASPEED_CLK_APLL, "apll" }, + { ASPEED_CLK_EPLL, "epll" }, + { ASPEED_CLK_DPLL, "dpll" }, + { ASPEED_CLK_AHB, "hclk" }, + { ASPEED_CLK_APB1, "pclk1" }, + { ASPEED_CLK_APB2, "pclk2" }, + { ASPEED_CLK_BCLK, "bclk" }, + { ASPEED_CLK_UARTX, "uxclk" }, + { ASPEED_CLK_HUARTX, "huxclk" }, +}; + +int soc_clk_dump(void) +{ + struct udevice *dev; + struct clk clk; + unsigned long rate; + int i, ret; + + ret = uclass_get_device_by_driver(UCLASS_CLK, DM_GET_DRIVER(aspeed_scu), + &dev); + if (ret) + return ret; + + printf("Clk\t\tHz\n"); + + for (i = 0; i < ARRAY_SIZE(aspeed_clk_names); i++) { + clk.id = aspeed_clk_names[i].id; + ret = clk_request(dev, &clk); + if (ret < 0) { + debug("%s clk_request() failed: %d\n", __func__, ret); + continue; + } + + ret = clk_get_rate(&clk); + rate = ret; + + clk_free(&clk); + + if (ret == -ENOTSUPP) { + printf("clk ID %lu not supported yet\n", + aspeed_clk_names[i].id); + continue; + } + if (ret < 0) { + printf("%s %lu: get_rate err: %d\n", __func__, + aspeed_clk_names[i].id, ret); + continue; + } + + printf("%s(%3lu):\t%lu\n", aspeed_clk_names[i].name, + aspeed_clk_names[i].id, rate); + } + + return 0; +} + +static const struct udevice_id ast2600_clk_ids[] = { + { .compatible = "aspeed,ast2600-scu", }, + { }, +}; + +U_BOOT_DRIVER(aspeed_ast2600_scu) = { + .name = "aspeed_ast2600_scu", + .id = UCLASS_CLK, + .of_match = ast2600_clk_ids, + .priv_auto_alloc_size = sizeof(struct ast2600_clk_priv), + .ops = &ast2600_clk_ops, + .bind = ast2600_clk_bind, + .probe = ast2600_clk_probe, +}; diff --git a/include/dt-bindings/clock/ast2600-clock.h b/include/dt-bindings/clock/ast2600-clock.h new file mode 100644 index 0000000000..36294a5140 --- /dev/null +++ b/include/dt-bindings/clock/ast2600-clock.h @@ -0,0 +1,62 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright (C) ASPEED Technology Inc. + */ + +#define ASPEED_CLK_GATE_ECLK 0 +#define ASPEED_CLK_GATE_GCLK 1 +#define ASPEED_CLK_GATE_MCLK 2 +#define ASPEED_CLK_GATE_VCLK 3 +#define ASPEED_CLK_GATE_BCLK 4 +#define ASPEED_CLK_GATE_DCLK 5 +#define ASPEED_CLK_GATE_LCLK 6 +#define ASPEED_CLK_GATE_YCLK 7 +#define ASPEED_CLK_GATE_LHCCLK 8 +#define ASPEED_CLK_GATE_REFCLK 9 +#define ASPEED_CLK_GATE_ESPICLK 10 +#define ASPEED_CLK_GATE_UART1CLK 11 +#define ASPEED_CLK_GATE_UART2CLK 12 +#define ASPEED_CLK_GATE_UART3CLK 13 +#define ASPEED_CLK_GATE_UART4CLK 14 +#define ASPEED_CLK_GATE_UART5CLK 15 +#define ASPEED_CLK_GATE_UART6CLK 16 +#define ASPEED_CLK_GATE_UART7CLK 17 +#define ASPEED_CLK_GATE_UART8CLK 18 +#define ASPEED_CLK_GATE_UART9CLK 19 +#define ASPEED_CLK_GATE_UART10CLK 20 +#define ASPEED_CLK_GATE_UART11CLK 21 +#define ASPEED_CLK_GATE_UART12CLK 22 +#define ASPEED_CLK_GATE_UART13CLK 23 +#define ASPEED_CLK_GATE_MAC1CLK 24 +#define ASPEED_CLK_GATE_MAC2CLK 25 +#define ASPEED_CLK_GATE_MAC3CLK 26 +#define ASPEED_CLK_GATE_MAC4CLK 27 +#define ASPEED_CLK_GATE_RSACLK 28 +#define ASPEED_CLK_GATE_SDCLK 29 +#define ASPEED_CLK_GATE_SDEXTCLK 30 +#define ASPEED_CLK_GATE_EMMCCLK 31 +#define ASPEED_CLK_GATE_EMMCEXTCLK 32 +#define ASPEED_CLK_GATE_USBUHCICLK 33 +#define ASPEED_CLK_GATE_USBPORT1CLK 34 +#define ASPEED_CLK_GATE_USBPORT2CLK 35 +#define ASPEED_CLK_GATE_FSICLK 36 + +#define ASPEED_CLK_APLL 37 +#define ASPEED_CLK_EPLL 38 +#define ASPEED_CLK_DPLL 39 +#define ASPEED_CLK_HPLL 40 +#define ASPEED_CLK_AHB 41 +#define ASPEED_CLK_APB1 42 +#define ASPEED_CLK_APB2 43 +#define ASPEED_CLK_UART 44 +#define ASPEED_CLK_SDIO 45 +#define ASPEED_CLK_ECLK 46 +#define ASPEED_CLK_ECLK_MUX 47 +#define ASPEED_CLK_LHCLK 48 +#define ASPEED_CLK_MAC 49 +#define ASPEED_CLK_BCLK 50 +#define ASPEED_CLK_MPLL 51 +#define ASPEED_CLK_24M 52 +#define ASPEED_CLK_EMMC 53 +#define ASPEED_CLK_UARTX 54 +#define ASPEED_CLK_HUARTX 55