The new Allwinner H6 SoC has a brand new CCU layout.
Add clock code for it.
Signed-off-by: Icenowy Zheng icenowy@aosc.io --- arch/arm/include/asm/arch-sunxi/clock.h | 2 + .../include/asm/arch-sunxi/clock_sun50i_h6.h | 320 ++++++++++++++++++ arch/arm/mach-sunxi/Makefile | 1 + arch/arm/mach-sunxi/clock_sun50i_h6.c | 94 +++++ 4 files changed, 417 insertions(+) create mode 100644 arch/arm/include/asm/arch-sunxi/clock_sun50i_h6.h create mode 100644 arch/arm/mach-sunxi/clock_sun50i_h6.c
diff --git a/arch/arm/include/asm/arch-sunxi/clock.h b/arch/arm/include/asm/arch-sunxi/clock.h index 3747f74d36..ecbef85f83 100644 --- a/arch/arm/include/asm/arch-sunxi/clock.h +++ b/arch/arm/include/asm/arch-sunxi/clock.h @@ -17,6 +17,8 @@ /* clock control module regs definition */ #if defined(CONFIG_MACH_SUN8I_A83T) #include <asm/arch/clock_sun8i_a83t.h> +#elif defined(CONFIG_MACH_SUN50I_H6) +#include <asm/arch/clock_sun50i_h6.h> #elif defined(CONFIG_MACH_SUN6I) || defined(CONFIG_MACH_SUN8I) || \ defined(CONFIG_MACH_SUN50I) #include <asm/arch/clock_sun6i.h> diff --git a/arch/arm/include/asm/arch-sunxi/clock_sun50i_h6.h b/arch/arm/include/asm/arch-sunxi/clock_sun50i_h6.h new file mode 100644 index 0000000000..e36937059b --- /dev/null +++ b/arch/arm/include/asm/arch-sunxi/clock_sun50i_h6.h @@ -0,0 +1,320 @@ +/* + * Allwinner H6 clock register definitions + * + * (C) Copyright 2017 Icenowy Zheng icenowy@aosc.io + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef _SUNXI_CLOCK_SUN50I_H6_H +#define _SUNXI_CLOCK_SUN50I_H6_H + +struct sunxi_ccm_reg { + u32 pll1_cfg; /* 0x000 pll1 (cpux) control */ + u8 reserved_0x004[12]; + u32 pll5_cfg; /* 0x010 pll5 (ddr) control */ + u8 reserved_0x014[12]; + u32 pll6_cfg; /* 0x020 pll6 (periph0) control */ + u8 reserved_0x020[4]; + u32 pll_periph1_cfg; /* 0x028 pll periph1 control */ + u8 reserved_0x028[4]; + u32 pll7_cfg; /* 0x030 pll7 (gpu) control */ + u8 reserved_0x034[12]; + u32 pll3_cfg; /* 0x040 pll3 (video0) control */ + u8 reserved_0x044[4]; + u32 pll_video1_cfg; /* 0x048 pll video1 control */ + u8 reserved_0x04c[12]; + u32 pll4_cfg; /* 0x058 pll4 (ve) control */ + u8 reserved_0x05c[4]; + u32 pll10_cfg; /* 0x060 pll10 (de) control */ + u8 reserved_0x064[12]; + u32 pll9_cfg; /* 0x070 pll9 (hsic) control */ + u8 reserved_0x074[4]; + u32 pll2_cfg; /* 0x078 pll2 (audio) control */ + u8 reserved_0x07c[148]; + u32 pll5_pat; /* 0x110 pll5 (ddr) pattern */ + u8 reserved_0x114[20]; + u32 pll_periph1_pat0; /* 0x128 pll periph1 pattern0 */ + u32 pll_periph1_pat1; /* 0x12c pll periph1 pattern1 */ + u32 pll7_pat0; /* 0x130 pll7 (gpu) pattern0 */ + u32 pll7_pat1; /* 0x134 pll7 (gpu) pattern1 */ + u8 reserved_0x138[8]; + u32 pll3_pat0; /* 0x140 pll3 (video0) pattern0 */ + u32 pll3_pat1; /* 0x144 pll3 (video0) pattern1 */ + u32 pll_video1_pat0; /* 0x148 pll video1 pattern0 */ + u32 pll_video1_pat1; /* 0x14c pll video1 pattern1 */ + u8 reserved_0x150[8]; + u32 pll4_pat0; /* 0x158 pll4 (ve) pattern0 */ + u32 pll4_pat1; /* 0x15c pll4 (ve) pattern1 */ + u32 pll10_pat0; /* 0x160 pll10 (de) pattern0 */ + u32 pll10_pat1; /* 0x164 pll10 (de) pattern1 */ + u8 reserved_0x168[8]; + u32 pll9_pat0; /* 0x170 pll9 (hsic) pattern0 */ + u32 pll9_pat1; /* 0x174 pll9 (hsic) pattern1 */ + u32 pll2_pat0; /* 0x178 pll2 (audio) pattern0 */ + u32 pll2_pat1; /* 0x17c pll2 (audio) pattern1 */ + u8 reserved_0x180[384]; + u32 pll1_bias; /* 0x300 pll1 (cpux) bias */ + u8 reserved_0x304[12]; + u32 pll5_bias; /* 0x310 pll5 (ddr) bias */ + u8 reserved_0x314[12]; + u32 pll6_bias; /* 0x320 pll6 (periph0) bias */ + u8 reserved_0x324[4]; + u32 pll_periph1_bias; /* 0x328 pll periph1 bias */ + u8 reserved_0x32c[4]; + u32 pll7_bias; /* 0x330 pll7 (gpu) bias */ + u8 reserved_0x334[12]; + u32 pll3_bias; /* 0x340 pll3 (video0) bias */ + u8 reserved_0x344[4]; + u32 pll_video1_bias; /* 0x348 pll video1 bias */ + u8 reserved_0x34c[12]; + u32 pll4_bias; /* 0x358 pll4 (ve) bias */ + u8 reserved_0x35c[4]; + u32 pll10_bias; /* 0x360 pll10 (de) bias */ + u8 reserved_0x364[12]; + u32 pll9_bias; /* 0x370 pll9 (hsic) bias */ + u8 reserved_0x374[4]; + u32 pll2_bias; /* 0x378 pll2 (audio) bias */ + u8 reserved_0x37c[132]; + u32 pll1_tun; /* 0x400 pll1 (cpux) tunning */ + u8 reserved_0x404[252]; + u32 cpu_axi_cfg; /* 0x500 CPUX/AXI clock control*/ + u8 reserved_0x504[12]; + u32 psi_ahb1_ahb2_cfg; /* 0x510 PSI/AHB1/AHB2 clock control */ + u8 reserved_0x514[8]; + u32 ahb3_cfg; /* 0x51c AHB3 clock control */ + u32 apb1_cfg; /* 0x520 APB1 clock control */ + u32 apb2_cfg; /* 0x524 APB2 clock control */ + u8 reserved_0x528[24]; + u32 mbus_cfg; /* 0x540 MBUS clock control */ + u8 reserved_0x544[188]; + u32 de_clk_cfg; /* 0x600 DE clock control */ + u8 reserved_0x604[8]; + u32 de_gate_reset; /* 0x60c DE gate/reset control */ + u8 reserved_0x610[16]; + u32 di_clk_cfg; /* 0x620 DI clock control */ + u8 reserved_0x024[8]; + u32 di_gate_reset; /* 0x62c DI gate/reset control */ + u8 reserved_0x630[64]; + u32 gpu_clk_cfg; /* 0x670 GPU clock control */ + u8 reserved_0x674[8]; + u32 gpu_gate_reset; /* 0x67c GPU gate/reset control */ + u32 ce_clk_cfg; /* 0x680 CE clock control */ + u8 reserved_0x684[8]; + u32 ce_gate_reset; /* 0x68c CE gate/reset control */ + u32 ve_clk_cfg; /* 0x690 VE clock control */ + u8 reserved_0x694[8]; + u32 ve_gate_reset; /* 0x69c VE gate/reset control */ + u8 reserved_0x6a0[16]; + u32 emce_clk_cfg; /* 0x6b0 EMCE clock control */ + u8 reserved_0x6b4[8]; + u32 emce_gate_reset; /* 0x6bc EMCE gate/reset control */ + u32 vp9_clk_cfg; /* 0x6c0 VP9 clock control */ + u8 reserved_0x6c4[8]; + u32 vp9_gate_reset; /* 0x6cc VP9 gate/reset control */ + u8 reserved_0x6d0[60]; + u32 dma_gate_reset; /* 0x70c DMA gate/reset control */ + u8 reserved_0x710[12]; + u32 msgbox_gate_reset; /* 0x71c Message Box gate/reset control */ + u8 reserved_0x720[12]; + u32 spinlock_gate_reset;/* 0x72c Spinlock gate/reset control */ + u8 reserved_0x730[12]; + u32 hstimer_gate_reset; /* 0x73c HS Timer gate/reset control */ + u32 avs_gate_reset; /* 0x740 AVS gate/reset control */ + u8 reserved_0x744[72]; + u32 dbgsys_gate_reset; /* 0x78c Debugging system gate/reset control */ + u8 reserved_0x790[12]; + u32 psi_gate_reset; /* 0x79c PSI gate/reset control */ + u8 reserved_0x7a0[12]; + u32 pwm_gate_reset; /* 0x7ac PWM gate/reset control */ + u8 reserved_0x7b0[12]; + u32 iommu_gate_reset; /* 0x7bc IOMMU gate/reset control */ + u8 reserved_0x7c0[64]; + u32 dram_clk_cfg; /* 0x800 DRAM clock control */ + u32 mbus_gate; /* 0x804 MBUS gate control */ + u8 reserved_0x808[4]; + u32 dram_gate_reset; /* 0x80c DRAM gate/reset control */ + u32 nand0_clk_cfg; /* 0x810 NAND0 clock control */ + u32 nand1_clk_cfg; /* 0x814 NAND1 clock control */ + u8 reserved_0x818[20]; + u32 nand_gate_reset; /* 0x82c NAND gate/reset control */ + u32 sd0_clk_cfg; /* 0x830 MMC0 clock control */ + u32 sd1_clk_cfg; /* 0x834 MMC1 clock control */ + u32 sd2_clk_cfg; /* 0x838 MMC2 clock control */ + u8 reserved_0x83c[16]; + u32 sd_gate_reset; /* 0x84c MMC gate/reset control */ + u8 reserved_0x850[188]; + u32 uart_gate_reset; /* 0x90c UART gate/reset control */ + u8 reserved_0x910[12]; + u32 twi_gate_reset; /* 0x91c I2C gate/reset control */ + u8 reserved_0x920[28]; + u32 scr_gate_reset; /* 0x93c SCR gate/reset control */ + u32 spi0_clk_cfg; /* 0x940 SPI0 clock control */ + u32 spi1_clk_cfg; /* 0x944 SPI1 clock control */ + u8 reserved_0x948[36]; + u32 spi_gate_reset; /* 0x96c SPI gate/reset control */ + u8 reserved_0x970[12]; + u32 emac_gate_reset; /* 0x97c EMAC gate/reset control */ + u8 reserved_0x980[48]; + u32 ts_clk_cfg; /* 0x9b0 TS clock control */ + u8 reserved_0x9b4[8]; + u32 ts_gate_reset; /* 0x9bc TS gate/reset control */ + u32 irtx_clk_cfg; /* 0x9c0 IR TX clock control */ + u8 reserved_0x9c4[8]; + u32 irtx_gate_reset; /* 0x9cc IR TX gate/reset control */ + u8 reserved_0x9d0[44]; + u32 ths_gate_reset; /* 0x9fc THS gate/reset control */ + u8 reserved_0xa00[12]; + u32 i2s3_clk_cfg; /* 0xa0c I2S3 clock control */ + u32 i2s0_clk_cfg; /* 0xa10 I2S0 clock control */ + u32 i2s1_clk_cfg; /* 0xa14 I2S1 clock control */ + u32 i2s2_clk_cfg; /* 0xa18 I2S2 clock control */ + u32 i2s_gate_reset; /* 0xa1c I2S gate/reset control */ + u32 spdif_clk_cfg; /* 0xa20 SPDIF clock control */ + u8 reserved_0xa24[8]; + u32 spdif_gate_reset; /* 0xa2c SPDIF gate/reset control */ + u8 reserved_0xa30[16]; + u32 dmic_clk_cfg; /* 0xa40 DMIC clock control */ + u8 reserved_0xa44[8]; + u32 dmic_gate_reset; /* 0xa4c DMIC gate/reset control */ + u8 reserved_0xa50[16]; + u32 ahub_clk_cfg; /* 0xa60 Audio HUB clock control */ + u8 reserved_0xa64[8]; + u32 ahub_gate_reset; /* 0xa6c Audio HUB gate/reset control */ + u32 usb0_clk_cfg; /* 0xa70 USB0(OTG) clock control */ + u32 usb1_clk_cfg; /* 0xa74 USB1(XHCI) clock control */ + u8 reserved_0xa78[4]; + u32 usb3_clk_cfg; /* 0xa78 USB3 clock control */ + u8 reserved_0xa80[12]; + u32 usb_gate_reset; /* 0xa8c USB gate/reset control */ + u8 reserved_0xa90[32]; + u32 pcie_ref_clk_cfg; /* 0xab0 PCIE REF clock control */ + u32 pcie_axi_clk_cfg; /* 0xab4 PCIE AXI clock control */ + u32 pcie_aux_clk_cfg; /* 0xab8 PCIE AUX clock control */ + u32 pcie_gate_reset; /* 0xabc PCIE gate/reset control */ + u8 reserved_0xac0[64]; + u32 hdmi_clk_cfg; /* 0xb00 HDMI clock control */ + u32 hdmi_slow_clk_cfg; /* 0xb04 HDMI slow clock control */ + u8 reserved_0xb08[8]; + u32 hdmi_cec_clk_cfg; /* 0xb10 HDMI CEC clock control */ + u8 reserved_0xb14[8]; + u32 hdmi_gate_reset; /* 0xb1c HDMI gate/reset control */ + u8 reserved_0xb20[60]; + u32 tcon_top_gate_reset;/* 0xb5c TCON TOP gate/reset control */ + u32 tcon_lcd0_clk_cfg; /* 0xb60 TCON LCD0 clock control */ + u8 reserved_0xb64[24]; + u32 tcon_lcd_gate_reset;/* 0xb7c TCON LCD gate/reset control */ + u32 tcon_tv0_clk_cfg; /* 0xb80 TCON TV0 clock control */ + u8 reserved_0xb84[24]; + u32 tcon_tv_gate_reset; /* 0xb9c TCON TV gate/reset control */ + u8 reserved_0xba0[96]; + u32 csi_misc_clk_cfg; /* 0xc00 CSI MISC clock control */ + u32 csi_top_clk_cfg; /* 0xc04 CSI TOP clock control */ + u32 csi_mclk_cfg; /* 0xc08 CSI Master clock control */ + u8 reserved_0xc0c[32]; + u32 csi_gate_reset; /* 0xc2c CSI gate/reset control */ + u8 reserved_0xc30[16]; + u32 hdcp_clk_cfg; /* 0xc40 HDCP clock control */ + u8 reserved_0xc44[8]; + u32 hdcp_gate_reset; /* 0xc4c HDCP gate/reset control */ + u8 reserved_0xc50[688]; + u32 ccu_sec_switch; /* 0xf00 CCU security switch */ + u32 pll_lock_dbg_ctrl; /* 0xf04 PLL lock debugging control */ +}; + +/* pll1 bit field */ +#define CCM_PLL1_CTRL_EN BIT(31) +#define CCM_PLL1_LOCK_EN BIT(29) +#define CCM_PLL1_LOCK BIT(28) +#define CCM_PLL1_CLOCK_TIME_2 (2 << 24) +#define CCM_PLL1_CTRL_P(p) ((p) << 16) +#define CCM_PLL1_CTRL_N(n) ((n) << 8) + +/* pll5 bit field */ +#define CCM_PLL5_CTRL_EN BIT(31) +#define CCM_PLL5_LOCK_EN BIT(29) +#define CCM_PLL5_LOCK BIT(28) +#define CCM_PLL5_CTRL_N(n) ((n) << 8) +#define CCM_PLL5_CTRL_DIV1(div1) ((div1) << 0) +#define CCM_PLL5_CTRL_DIV2(div0) ((div0) << 1) + +/* pll6 bit field */ +#define CCM_PLL6_CTRL_EN BIT(31) +#define CCM_PLL6_LOCK_EN BIT(29) +#define CCM_PLL6_LOCK BIT(28) +#define CCM_PLL6_CTRL_N_SHIFT 8 +#define CCM_PLL6_CTRL_N_MASK (0xff << CCM_PLL6_CTRL_N_SHIFT) +#define CCM_PLL6_CTRL_DIV1_SHIFT 0 +#define CCM_PLL6_CTRL_DIV1_MASK (0x1 << CCM_PLL6_CTRL_DIV1_SHIFT) +#define CCM_PLL6_CTRL_DIV2_SHIFT 1 +#define CCM_PLL6_CTRL_DIV2_MASK (0x1 << CCM_PLL6_CTRL_DIV2_SHIFT) +#define CCM_PLL6_DEFAULT 0xa0006300 + +/* cpu_axi bit field*/ +#define CCM_CPU_AXI_MUX_MASK (0x3 << 24) +#define CCM_CPU_AXI_MUX_OSC24M (0x0 << 24) +#define CCM_CPU_AXI_MUX_PLL_CPUX (0x3 << 24) +#define CCM_CPU_AXI_APB_MASK 0x300 +#define CCM_CPU_AXI_AXI_MASK 0x3 +#define CCM_CPU_AXI_DEFAULT_FACTORS 0x301 + +/* psi_ahb1_ahb2 bit field */ +#define CCM_PSI_AHB1_AHB2_DEFAULT 0x03000102 + +/* ahb3 bit field */ +#define CCM_AHB3_DEFAULT 0x03000002 + +/* apb1 bit field */ +#define CCM_APB1_DEFAULT 0x03000102 + +/* apb2 bit field */ +#define APB2_CLK_SRC_OSC24M (0x0 << 24) +#define APB2_CLK_SRC_OSC32K (0x1 << 24) +#define APB2_CLK_SRC_PSI (0x2 << 24) +#define APB2_CLK_SRC_PLL6 (0x3 << 24) +#define APB2_CLK_SRC_MASK (0x3 << 24) +#define APB2_CLK_RATE_N_1 (0x0 << 8) +#define APB2_CLK_RATE_N_2 (0x1 << 8) +#define APB2_CLK_RATE_N_4 (0x2 << 8) +#define APB2_CLK_RATE_N_8 (0x3 << 8) +#define APB2_CLK_RATE_N_MASK (3 << 8) +#define APB2_CLK_RATE_M(m) (((m)-1) << 0) +#define APB2_CLK_RATE_M_MASK (3 << 0) + +/* MBUS clock bit field */ +#define MBUS_ENABLE BIT(31) +#define MBUS_RESET BIT(30) +#define MBUS_CLK_SRC_MASK GENMASK(25, 24) +#define MBUS_CLK_SRC_OSCM24 (0 << 24) +#define MBUS_CLK_SRC_PLL6X2 (1 << 24) +#define MBUS_CLK_SRC_PLL5 (2 << 24) +#define MBUS_CLK_SRC_PLL6X4 (3 << 24) +#define MBUS_CLK_M(m) (((m)-1) << 0) + +/* Module gate/reset shift*/ +#define RESET_SHIFT (16) + +/* DRAM clock bit field */ +#define DRAM_MOD_RESET BIT(30) +#define DRAM_CLK_UPDATE BIT(27) +#define DRAM_CLK_SRC_MASK GENMASK(25, 24) +#define DRAM_CLK_SRC_PLL5 (0 << 24) +#define DRAM_CLK_M(m) (((m)-1) << 0) + +/* MMC clock bit field */ +#define CCM_MMC_CTRL_M(x) ((x) - 1) +#define CCM_MMC_CTRL_N(x) ((x) << 8) +#define CCM_MMC_CTRL_OSCM24 (0x0 << 24) +#define CCM_MMC_CTRL_PLL6X2 (0x1 << 24) +#define CCM_MMC_CTRL_PLL_PERIPH2X2 (0x2 << 24) +#define CCM_MMC_CTRL_ENABLE (0x1 << 31) +/* H6 doesn't have these delays */ +#define CCM_MMC_CTRL_OCLK_DLY(a) ((void) (a), 0) +#define CCM_MMC_CTRL_SCLK_DLY(a) ((void) (a), 0) + +#ifndef __ASSEMBLY__ +void clock_set_pll1(unsigned int hz); +unsigned int clock_get_pll6(void); +#endif + +#endif /* _SUNXI_CLOCK_SUN50I_H6_H */ diff --git a/arch/arm/mach-sunxi/Makefile b/arch/arm/mach-sunxi/Makefile index 41f047f89e..bafeb59d64 100644 --- a/arch/arm/mach-sunxi/Makefile +++ b/arch/arm/mach-sunxi/Makefile @@ -28,6 +28,7 @@ else obj-$(CONFIG_MACH_SUN8I) += clock_sun6i.o endif obj-$(CONFIG_MACH_SUN9I) += clock_sun9i.o gtbus_sun9i.o +obj-$(CONFIG_MACH_SUN50I_H6) += clock_sun50i_h6.o
ifdef CONFIG_SPL_BUILD obj-$(CONFIG_DRAM_SUN4I) += dram_sun4i.o diff --git a/arch/arm/mach-sunxi/clock_sun50i_h6.c b/arch/arm/mach-sunxi/clock_sun50i_h6.c new file mode 100644 index 0000000000..84bc469b2a --- /dev/null +++ b/arch/arm/mach-sunxi/clock_sun50i_h6.c @@ -0,0 +1,94 @@ +#include <common.h> +#include <asm/io.h> +#include <asm/arch/cpu.h> +#include <asm/arch/clock.h> + +#ifdef CONFIG_SPL_BUILD +void clock_init_safe(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + clock_set_pll1(408000000); + + writel(CCM_PLL6_DEFAULT, &ccm->pll6_cfg); + while (!(readl(&ccm->pll6_cfg) & CCM_PLL6_LOCK)) + ; + + clrsetbits_le32(&ccm->cpu_axi_cfg, CCM_CPU_AXI_APB_MASK | CCM_CPU_AXI_AXI_MASK, + CCM_CPU_AXI_DEFAULT_FACTORS); + + writel(CCM_PSI_AHB1_AHB2_DEFAULT, &ccm->psi_ahb1_ahb2_cfg); + writel(CCM_AHB3_DEFAULT, &ccm->ahb3_cfg); + writel(CCM_APB1_DEFAULT, &ccm->apb1_cfg); + + /* + * The mux and factor are set, but the clock will be enabled in + * DRAM initialization code. + */ + writel(MBUS_CLK_SRC_PLL6X2 | MBUS_CLK_M(3), &ccm->mbus_cfg); +} +#endif + +void clock_init_uart(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + /* uart clock source is apb2 */ + writel(APB2_CLK_SRC_OSC24M| + APB2_CLK_RATE_N_1| + APB2_CLK_RATE_M(1), + &ccm->apb2_cfg); + + /* open the clock for uart */ + setbits_le32(&ccm->uart_gate_reset, + 1 << (CONFIG_CONS_INDEX - 1)); + + /* deassert uart reset */ + setbits_le32(&ccm->uart_gate_reset, + 1 << (RESET_SHIFT + CONFIG_CONS_INDEX - 1)); +} + +#ifdef CONFIG_SPL_BUILD +void clock_set_pll1(unsigned int clk) +{ + struct sunxi_ccm_reg * const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + u32 val; + + /* Do not support clocks < 288MHz as they need factor P */ + if (clk < 288000000) clk = 288000000; + + /* Switch to 24MHz clock while changing PLL1 */ + val = readl(&ccm->cpu_axi_cfg); + val &= ~CCM_CPU_AXI_MUX_MASK; + val |= CCM_CPU_AXI_MUX_OSC24M; + writel(val, &ccm->cpu_axi_cfg); + + /* clk = 24*n/p, p is ignored if clock is >288MHz */ + writel(CCM_PLL1_CTRL_EN | CCM_PLL1_LOCK_EN | CCM_PLL1_CLOCK_TIME_2 | + CCM_PLL1_CTRL_N(clk / 24000000), &ccm->pll1_cfg); + while (!(readl(&ccm->pll1_cfg) & CCM_PLL1_LOCK)) {} + + /* Switch CPU to PLL1 */ + val = readl(&ccm->cpu_axi_cfg); + val &= ~CCM_CPU_AXI_MUX_MASK; + val |= CCM_CPU_AXI_MUX_PLL_CPUX; + writel(val, &ccm->cpu_axi_cfg); +} +#endif + +unsigned int clock_get_pll6(void) +{ + struct sunxi_ccm_reg *const ccm = + (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; + + uint32_t rval = readl(&ccm->pll6_cfg); + int n = ((rval & CCM_PLL6_CTRL_N_MASK) >> CCM_PLL6_CTRL_N_SHIFT); + int div1 = ((rval & CCM_PLL6_CTRL_DIV1_MASK) >> + CCM_PLL6_CTRL_DIV1_SHIFT) + 1; + int div2 = ((rval & CCM_PLL6_CTRL_DIV2_MASK) >> + CCM_PLL6_CTRL_DIV2_SHIFT) + 1; + /* The register defines PLL6-4X, not plain PLL6 */ + return 24000000 * n / div1 / div2 / 4; +}