This patch adds support for MediaTek MT7620 SoC. All files are dedicated for u-boot.
Signed-off-by: Weijie Gao weijie.gao@mediatek.com --- v3 changes: none v2 changes: remove use of common.h --- arch/mips/dts/mt7620-u-boot.dtsi | 14 + arch/mips/dts/mt7620.dtsi | 296 ++++++++++++++++++ arch/mips/mach-mtmips/Kconfig | 18 ++ arch/mips/mach-mtmips/Makefile | 1 + .../mach-mtmips/include/mach/mt7620-sysc.h | 54 ++++ arch/mips/mach-mtmips/mt7620/Kconfig | 54 ++++ arch/mips/mach-mtmips/mt7620/Makefile | 10 + arch/mips/mach-mtmips/mt7620/dram.c | 113 +++++++ arch/mips/mach-mtmips/mt7620/init.c | 193 ++++++++++++ arch/mips/mach-mtmips/mt7620/lowlevel_init.S | 53 ++++ arch/mips/mach-mtmips/mt7620/mt7620.h | 103 ++++++ arch/mips/mach-mtmips/mt7620/serial.c | 36 +++ arch/mips/mach-mtmips/mt7620/sysc.c | 172 ++++++++++ include/configs/mt7620.h | 46 +++ 14 files changed, 1163 insertions(+) create mode 100644 arch/mips/dts/mt7620-u-boot.dtsi create mode 100644 arch/mips/dts/mt7620.dtsi create mode 100644 arch/mips/mach-mtmips/include/mach/mt7620-sysc.h create mode 100644 arch/mips/mach-mtmips/mt7620/Kconfig create mode 100644 arch/mips/mach-mtmips/mt7620/Makefile create mode 100644 arch/mips/mach-mtmips/mt7620/dram.c create mode 100644 arch/mips/mach-mtmips/mt7620/init.c create mode 100644 arch/mips/mach-mtmips/mt7620/lowlevel_init.S create mode 100644 arch/mips/mach-mtmips/mt7620/mt7620.h create mode 100644 arch/mips/mach-mtmips/mt7620/serial.c create mode 100644 arch/mips/mach-mtmips/mt7620/sysc.c create mode 100644 include/configs/mt7620.h
diff --git a/arch/mips/dts/mt7620-u-boot.dtsi b/arch/mips/dts/mt7620-u-boot.dtsi new file mode 100644 index 0000000000..ed8425719b --- /dev/null +++ b/arch/mips/dts/mt7620-u-boot.dtsi @@ -0,0 +1,14 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao weijie.gao@mediatek.com + */ + +&uartlite { + u-boot,dm-pre-reloc; +}; + +&uartfull { + u-boot,dm-pre-reloc; +}; diff --git a/arch/mips/dts/mt7620.dtsi b/arch/mips/dts/mt7620.dtsi new file mode 100644 index 0000000000..03a80b7a70 --- /dev/null +++ b/arch/mips/dts/mt7620.dtsi @@ -0,0 +1,296 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <dt-bindings/clock/mt7620-clk.h> +#include <dt-bindings/reset/mt7620-reset.h> + +/ { + #address-cells = <1>; + #size-cells = <1>; + compatible = "mediatek,mt7620-soc"; + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + cpu@0 { + compatible = "mti,mips24KEc"; + device_type = "cpu"; + reg = <0>; + }; + }; + + clk48m: clk48m@0 { + compatible = "fixed-clock"; + + clock-frequency = <48000000>; + + #clock-cells = <0>; + }; + + sysc: sysc@10000000 { + compatible = "mediatek,mt7620-sysc"; + reg = <0x10000000 0x100>; + }; + + clkctrl: clkctrl@10000030 { + compatible = "mediatek,mt7620-clk"; + mediatek,sysc = <&sysc>; + + #clock-cells = <1>; + }; + + rstctrl: rstctrl@10000034 { + compatible = "mediatek,mtmips-reset"; + reg = <0x10000034 0x4>; + #reset-cells = <1>; + }; + + reboot: resetctl-reboot { + compatible = "resetctl-reboot"; + + resets = <&rstctrl SYS_RST>; + reset-names = "sysreset"; + }; + + uartfull: uartfull@10000500 { + compatible = "mediatek,mt7620-uart"; + reg = <10000500 0x100>; + + pinctrl-names = "default"; + pinctrl-0 = <&uartf_gpio_pins>; + + clocks = <&clkctrl CLK_UARTF>; + + resets = <&rstctrl UARTF_RST>; + reset-names = "uartf"; + + clock-frequency = <40000000>; + + status = "disabled"; + }; + + uartlite: uartlite@10000c00 { + compatible = "mediatek,mt7620-uart"; + reg = <0x10000c00 0x100>; + + pinctrl-names = "default"; + pinctrl-0 = <&uartl_pins>; + + clocks = <&clkctrl CLK_UARTL>; + + resets = <&rstctrl UARTL_RST>; + reset-names = "uartl"; + + clock-frequency = <40000000>; + }; + + pinctrl: pinctrl@10000060 { + compatible = "mediatek,mt7620-pinctrl"; + reg = <0x10000060 0x4>; + + pinctrl-names = "default"; + pinctrl-0 = <&state_default>; + + state_default: pin_state { + sutif_pins { + groups = "sutif"; + function = "none"; + }; + }; + + nand_pins: nand_pins { + groups = "nand"; + function = "nand"; + }; + + sd_pins: sd_pins { + groups = "nand"; + function = "sd"; + }; + + spi_single_pins: spi_single_pins { + groups = "spi"; + function = "spi"; + }; + + spi_dual_pins: spi_dual_pins { + spi_master_pins { + groups = "spi"; + function = "spi"; + }; + + spi_cs1_pin { + groups = "spi cs1"; + function = "spi cs1"; + }; + }; + + uartl_pins: uartl_pins { + groups = "uartl"; + function = "uartl"; + }; + + uartf_pins: uartf_pins { + groups = "uartf"; + function = "uartf"; + }; + + uartf_pcm_pins: uartf_pcm_pins { + groups = "uartf"; + function = "uartf pcm"; + }; + + uartf_i2s_pins: uartf_i2s_pins { + groups = "uartf"; + function = "i2s uartf"; + }; + + uartf_gpio_pins: uartf_gpio_pins { + groups = "uartf"; + function = "uartf gpio"; + }; + }; + + watchdog: watchdog@10000120 { + compatible = "mediatek,mt7620-wdt"; + reg = <0x10000120 0x10>; + + resets = <&rstctrl TIMER_RST>; + reset-names = "wdt"; + }; + + gpio0: gpio0@10000600 { + compatible = "mediatek,mt7620-gpio"; + reg = <0x10000600 0x34>; + + resets = <&rstctrl PIO_RST>; + reset-names = "pio"; + + mediatek,bank-name = "PIOA"; + mediatek,gpio-num = <24>; + mediatek,register-map = <0x20 0x24 0x2c 0x30>; + + gpio-controller; + #gpio-cells = <2>; + }; + + gpio1: gpio1@10000638 { + compatible = "mediatek,mt7620-gpio"; + reg = <0x10000638 0x24>; + + resets = <&rstctrl PIO_RST>; + reset-names = "pio"; + + mediatek,bank-name = "PIOB"; + mediatek,gpio-num = <16>; + mediatek,register-map = <0x10 0x14 0x1c 0x20>; + + gpio-controller; + #gpio-cells = <2>; + }; + + gpio2: gpio2@10000660 { + compatible = "mediatek,mt7620-gpio"; + reg = <0x10000660 0x24>; + + resets = <&rstctrl PIO_RST>; + reset-names = "pio"; + + mediatek,bank-name = "PIOC"; + mediatek,gpio-num = <32>; + mediatek,register-map = <0x10 0x14 0x1c 0x20>; + + gpio-controller; + #gpio-cells = <2>; + }; + + gpio3: gpio3@10000688 { + compatible = "mediatek,mt7620-gpio"; + reg = <0x10000688 0x24>; + + resets = <&rstctrl PIO_RST>; + reset-names = "pio"; + + mediatek,bank-name = "PIOD"; + mediatek,gpio-num = <1>; + mediatek,register-map = <0x10 0x14 0x1c 0x20>; + + gpio-controller; + #gpio-cells = <2>; + }; + + spi0: spi@10000b00 { + compatible = "mediatek,mt7620-spi"; + reg = <0x10000b00 0x100>; + + pinctrl-names = "default"; + pinctrl-0 = <&spi_single_pins>; + + resets = <&rstctrl SPI_RST>; + reset-names = "spi"; + + #address-cells = <1>; + #size-cells = <0>; + + clocks = <&clkctrl CLK_SPI>; + }; + + eth: eth@10100000 { + compatible = "mediatek,mt7620-eth"; + reg = <0x10100000 0x10000 + 0x10110000 0x8000>; + reg-names = "fe", "esw"; + + mediatek,sysc = <&sysc>; + + resets = <&rstctrl EPHY_RST>, + <&rstctrl ESW_RST>, + <&rstctrl FE_RST>; + reset-names = "ephy", "esw", "fe"; + + clocks = <&clkctrl CLK_EPHY>, + <&clkctrl CLK_ESW>, + <&clkctrl CLK_FE>; + clock-names = "ephy", "esw", "fe"; + + status = "disabled"; + }; + + usb_phy: mt7620-usb-phy { + compatible = "mediatek,mt7620-usbphy"; + + #phy-cells = <0>; + + mediatek,sysc = <&sysc>; + + clocks = <&clkctrl CLK_UPHY_48M>, <&clkctrl CLK_UPHY_12M>; + clock-names = "uphy48m", "uphy12m"; + + resets = <&rstctrl UHST_RST>, <&rstctrl UDEV_RST>; + reset-names = "uhst", "udev"; + }; + + ehci@101c0000 { + compatible = "generic-ehci"; + reg = <0x101c0000 0x1000>; + + phys = <&usb_phy>; + phy-names = "usb"; + }; + + mmc: mmc@10130000 { + compatible = "mediatek,mt7620-mmc"; + reg = <0x10130000 0x4000>; + builtin-cd = <1>; + r_smpl = <1>; + + pinctrl-names = "default"; + pinctrl-0 = <&sd_pins>; + + clocks = <&clk48m>, <&clkctrl CLK_SDHC>; + clock-names = "source", "hclk"; + + resets = <&rstctrl SDHC_RST>; + + status = "disabled"; + }; +}; diff --git a/arch/mips/mach-mtmips/Kconfig b/arch/mips/mach-mtmips/Kconfig index c383e82a6b..8756cadb0b 100644 --- a/arch/mips/mach-mtmips/Kconfig +++ b/arch/mips/mach-mtmips/Kconfig @@ -5,6 +5,7 @@ config SYS_MALLOC_F_LEN default 0x1000
config SYS_SOC + default "mt7620" if SOC_MT7620 default "mt7628" if SOC_MT7628
config SYS_DCACHE_SIZE @@ -31,10 +32,26 @@ config SPL_PAYLOAD
config BUILD_TARGET default "u-boot-with-spl.bin" if SPL + default "u-boot.bin"
choice prompt "MediaTek MIPS SoC select"
+config SOC_MT7620 + bool "MT7620" + select MIPS_L1_CACHE_SHIFT_5 + select SYS_MIPS_CACHE_INIT_RAM_LOAD + select PINCTRL_MT7620 + select MT7620_SERIAL + select MISC + select SPL_SEPARATE_BSS if SPL + select SPL_LOADER_SUPPORT if SPL + select SPL_OF_CONTROL if SPL_DM + select SPL_OF_PLATDATA if SPL_DM + select SPL_DM_SERIAL if SPL_DM + help + This supports MediaTek MT7620. + config SOC_MT7628 bool "MT7628" select MIPS_L1_CACHE_SHIFT_5 @@ -59,6 +76,7 @@ config SOC_MT7628
endchoice
+source "arch/mips/mach-mtmips/mt7620/Kconfig" source "arch/mips/mach-mtmips/mt7628/Kconfig"
endmenu diff --git a/arch/mips/mach-mtmips/Makefile b/arch/mips/mach-mtmips/Makefile index a7e6a66304..4909b47ef2 100644 --- a/arch/mips/mach-mtmips/Makefile +++ b/arch/mips/mach-mtmips/Makefile @@ -5,4 +5,5 @@ obj-y += ddr_init.o obj-y += ddr_cal.o obj-$(CONFIG_SPL_BUILD) += spl.o
+obj-$(CONFIG_SOC_MT7620) += mt7620/ obj-$(CONFIG_SOC_MT7628) += mt7628/ diff --git a/arch/mips/mach-mtmips/include/mach/mt7620-sysc.h b/arch/mips/mach-mtmips/include/mach/mt7620-sysc.h new file mode 100644 index 0000000000..743ca034c8 --- /dev/null +++ b/arch/mips/mach-mtmips/include/mach/mt7620-sysc.h @@ -0,0 +1,54 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao weijie.gao@mediatek.com + * + * Definitions of ioctl requests of MT7620 sysc driver + */ + +#ifndef _MT7620_SYSC_H_ +#define _MT7620_SYSC_H_ + +#include <linux/types.h> + +enum mt7620_sysc_requests { + MT7620_SYSC_IOCTL_GET_CLK, + MT7620_SYSC_IOCTL_GET_CHIP_REV, + MT7620_SYSC_IOCTL_SET_GE1_MODE, + MT7620_SYSC_IOCTL_SET_GE2_MODE, + MT7620_SYSC_IOCTL_SET_USB_MODE, + MT7620_SYSC_IOCTL_SET_PCIE_MODE +}; + +struct mt7620_sysc_clks { + u32 cpu_clk; + u32 sys_clk; + u32 xtal_clk; + u32 peri_clk; +}; + +struct mt7620_sysc_chip_rev { + bool bga; + u32 ver : 4; + u32 eco : 4; +}; + +enum mt7620_sysc_ge_mode { + MT7620_SYSC_GE_RGMII, + MT7620_SYSC_GE_MII, + MT7620_SYSC_GE_RMII, + MT7620_SYSC_GE_ESW_PHY, +}; + +enum mt7620_sysc_usb_mode { + MT7620_SYSC_USB_DEVICE_MODE, + MT7620_SYSC_USB_HOST_MODE +}; + +enum mt7620_sysc_pcie_mode { + MT7620_SYSC_PCIE_EP_MODE, + MT7620_SYSC_PCIE_RC_MODE +}; + +#endif /* _MT7620_SYSC_H_ */ diff --git a/arch/mips/mach-mtmips/mt7620/Kconfig b/arch/mips/mach-mtmips/mt7620/Kconfig new file mode 100644 index 0000000000..aa7cf1d3c1 --- /dev/null +++ b/arch/mips/mach-mtmips/mt7620/Kconfig @@ -0,0 +1,54 @@ + +if SOC_MT7620 + +config DEBUG_UART_BOARD_INIT + default y + +choice + prompt "Board select" + +endchoice + +choice + prompt "CPU frequency select" + default CPU_FREQ_580MHZ + +config CPU_FREQ_480MHZ + bool "480MHz" + +config CPU_FREQ_500MHZ + bool "500MHz" + +config CPU_FREQ_520MHZ + bool "520MHz" + +config CPU_FREQ_540MHZ + bool "540MHz" + +config CPU_FREQ_560MHZ + bool "560MHz" + +config CPU_FREQ_580MHZ + bool "580MHz" + +config CPU_FREQ_600MHZ + bool "600MHz" + +config CPU_FREQ_620MHZ + bool "620MHz" + +endchoice + +config CPU_FREQ_MULTI + int + range 0 7 + default 0 if CPU_FREQ_480MHZ + default 1 if CPU_FREQ_500MHZ + default 2 if CPU_FREQ_520MHZ + default 3 if CPU_FREQ_540MHZ + default 4 if CPU_FREQ_560MHZ + default 5 if CPU_FREQ_580MHZ + default 6 if CPU_FREQ_600MHZ + default 7 if CPU_FREQ_620MHZ + +endif diff --git a/arch/mips/mach-mtmips/mt7620/Makefile b/arch/mips/mach-mtmips/mt7620/Makefile new file mode 100644 index 0000000000..649f6c3798 --- /dev/null +++ b/arch/mips/mach-mtmips/mt7620/Makefile @@ -0,0 +1,10 @@ +# SPDX-License-Identifier: GPL-2.0 + +obj-y += lowlevel_init.o +obj-y += init.o +obj-y += dram.o +obj-y += serial.o + +ifndef CONFIG_SPL_BUILD +obj-y += sysc.o +endif diff --git a/arch/mips/mach-mtmips/mt7620/dram.c b/arch/mips/mach-mtmips/mt7620/dram.c new file mode 100644 index 0000000000..0f0e64bf5e --- /dev/null +++ b/arch/mips/mach-mtmips/mt7620/dram.c @@ -0,0 +1,113 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 MediaTek Inc. All Rights Reserved. + * + * Author: Weijie Gao weijie.gao@mediatek.com + */ + +#include <asm/addrspace.h> +#include <linux/bitops.h> +#include <linux/delay.h> +#include <linux/sizes.h> +#include <linux/io.h> +#include <mach/ddr.h> +#include <mach/mc.h> +#include "mt7620.h" + +/* SDR parameters */ +#define SDR_CFG0_VAL 0x51B283B3 +#define SDR_CFG1_VAL 0xC00003A9 + +/* DDR2 DQ_DLY */ +#define DDR2_DQ_DLY 0x88888888 + +/* DDR2 DQS_DLY */ +#define DDR2_DQS_DLY 0x88888888 + +static const struct mc_ddr_cfg ddr1_cfgs_200mhz[] = { + [DRAM_8MB] = { 0x34A1EB94, 0x20262324, 0x28000033, 0x00000002, 0x00000000 }, + [DRAM_16MB] = { 0x34A1EB94, 0x202A2324, 0x28000033, 0x00000002, 0x00000000 }, + [DRAM_32MB] = { 0x34A1E5CA, 0x202E2324, 0x28000033, 0x00000002, 0x00000000 }, + [DRAM_64MB] = { 0x3421E5CA, 0x20322324, 0x28000033, 0x00000002, 0x00000000 }, + [DRAM_128MB] = { 0x241B05CA, 0x20362334, 0x28000033, 0x00000002, 0x00000000 }, +}; + +static const struct mc_ddr_cfg ddr1_cfgs_160mhz[] = { + [DRAM_8MB] = { 0x239964A1, 0x20262323, 0x00000033, 0x00000002, 0x00000000 }, + [DRAM_16MB] = { 0x239964A1, 0x202A2323, 0x00000033, 0x00000002, 0x00000000 }, + [DRAM_32MB] = { 0x239964A1, 0x202E2323, 0x00000033, 0x00000002, 0x00000000 }, + [DRAM_64MB] = { 0x239984A1, 0x20322323, 0x00000033, 0x00000002, 0x00000000 }, + [DRAM_128MB] = { 0x239AB4A1, 0x20362333, 0x00000033, 0x00000002, 0x00000000 }, +}; + +static const struct mc_ddr_cfg ddr2_cfgs_200mhz[] = { + [DRAM_32MB] = { 0x2519E2E5, 0x222E2323, 0x68000C43, 0x00000416, 0x0000000A }, + [DRAM_64MB] = { 0x249AA2E5, 0x22322323, 0x68000C43, 0x00000416, 0x0000000A }, + [DRAM_128MB] = { 0x249B42E5, 0x22362323, 0x68000C43, 0x00000416, 0x0000000A }, + [DRAM_256MB] = { 0x249CE2E5, 0x223A2323, 0x68000C43, 0x00000416, 0x0000000A }, +}; + +static const struct mc_ddr_cfg ddr2_cfgs_160mhz[] = { + [DRAM_32MB] = { 0x23918250, 0x222E2322, 0x40000A43, 0x00000416, 0x00000006 }, + [DRAM_64MB] = { 0x239A2250, 0x22322322, 0x40000A43, 0x00000416, 0x00000008 }, + [DRAM_128MB] = { 0x2392A250, 0x22362322, 0x40000A43, 0x00000416, 0x00000008 }, + [DRAM_256MB] = { 0x24140250, 0x223A2322, 0x40000A43, 0x00000416, 0x00000008 }, +}; + +static void mt7620_memc_reset(int assert) +{ + void __iomem *sysc = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE); + + if (assert) + setbits_32(sysc + SYSCTL_RSTCTL_REG, MC_RST); + else + clrbits_32(sysc + SYSCTL_RSTCTL_REG, MC_RST); +} + +void mt7620_dram_init(void) +{ + void __iomem *sysc; + bool lspd = false; + int ddr_type, aux; + struct mc_ddr_init_param param; + + sysc = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE); + ddr_type = (readl(sysc + SYSCTL_SYSCFG0_REG) & DRAM_TYPE_M) + >> DRAM_TYPE_S; + aux = readl(sysc + SYSCTL_CPLL_CFG1_REG) & + (CPU_CLK_AUX1 | CPU_CLK_AUX0); + + if (aux == CPU_CLK_AUX1 || aux == CPU_CLK_AUX0) + lspd = true; + + mt7620_memc_reset(1); + __udelay(200); + + param.memc = ioremap_nocache(MEMCTL_BASE, MEMCTL_SIZE); + param.dq_dly = DDR2_DQ_DLY; + param.dqs_dly = DDR2_DQS_DLY; + param.mc_reset = mt7620_memc_reset; + param.memsize = 0; + param.bus_width = 0; + + if (ddr_type == DRAM_DDR1) { + if (lspd) + param.cfgs = ddr1_cfgs_160mhz; + else + param.cfgs = ddr1_cfgs_200mhz; + + ddr1_init(¶m); + } else if (ddr_type == DRAM_DDR2) { + if (lspd) + param.cfgs = ddr2_cfgs_160mhz; + else + param.cfgs = ddr2_cfgs_200mhz; + + ddr2_init(¶m); + } else { + param.sdr_cfg0 = SDR_CFG0_VAL; + param.sdr_cfg1 = SDR_CFG1_VAL; + + sdr_init(¶m); + } +} diff --git a/arch/mips/mach-mtmips/mt7620/init.c b/arch/mips/mach-mtmips/mt7620/init.c new file mode 100644 index 0000000000..93abf9228d --- /dev/null +++ b/arch/mips/mach-mtmips/mt7620/init.c @@ -0,0 +1,193 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 MediaTek Inc. All Rights Reserved. + * + * Author: Weijie Gao weijie.gao@mediatek.com + */ + +#include <config.h> +#include <asm/global_data.h> +#include <linux/io.h> +#include "mt7620.h" + +DECLARE_GLOBAL_DATA_PTR; + +static const char * const dram_type[] = { + "SDRAM", "DDR", "DDR2", "SDRAM" +}; + +static const char * const boot_mode[(CHIP_MODE_M >> CHIP_MODE_S) + 1] = { + [1] = "NAND 4-cycles 2KB-page", + [2] = "SPI-NOR 3-Byte Addr", + [3] = "SPI-NOR 4-Byte Addr", + [10] = "NAND 4-cycles 512B-page", + [11] = "NAND 5-cycles 2KB-page", + [12] = "NAND 3-cycles 512B-page", +}; + +static void cpu_pll_init(void) +{ + void __iomem *sysc = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE); + u32 pllmul = CONFIG_CPU_FREQ_MULTI; + + /* Make sure the pll multiplier is valid */ + if (pllmul > 7) + pllmul = 7; + + /* Set init CPU clock to 480MHz */ + clrsetbits_32(sysc + SYSCTL_CPLL_CFG1_REG, CPU_CLK_AUX1, CPU_CLK_AUX0); + + /* Enable software control of CPU PLL */ + setbits_32(sysc + SYSCTL_CPLL_CFG0_REG, CPLL_SW_CFG); + + /* CPU PLL power down */ + setbits_32(sysc + SYSCTL_CPLL_CFG1_REG, CPLL_PD); + + /* PLL configuration */ + clrsetbits_32(sysc + SYSCTL_CPLL_CFG0_REG, PLL_MULT_RATIO_M | + PLL_DIV_RATIO_M | SSC_UP_BOUND_M | SSC_EN, + (pllmul << PLL_MULT_RATIO_S) | SSC_SWING_M); + + /* CPU PLL power up */ + clrbits_32(sysc + SYSCTL_CPLL_CFG1_REG, CPLL_PD); + + /* Wait for CPU PLL locked */ + while (!(readl(sysc + SYSCTL_CPLL_CFG1_REG) & CPLL_LD)) + ; + + /* Set final CPU clock source */ + clrbits_32(sysc + SYSCTL_CPLL_CFG1_REG, CPU_CLK_AUX1 | CPU_CLK_AUX0); + + /* Adjust CPU clock */ + clrsetbits_32(sysc + SYSCTL_CPU_SYS_CLKCFG_REG, + CPU_FDIV_M | CPU_FFRAC_M, + (1 << CPU_FDIV_S) | (1 << CPU_FFRAC_S)); +} + +void mt7620_init(void) +{ + u32 cpu_clk; + + cpu_pll_init(); + + /* + * Set timer freq, which will be used during DRAM initialization + * Note that this function is using a temporary gd which will be + * destroyed after leaving this function. + */ + mt7620_get_clks(&cpu_clk, NULL, NULL); + gd->arch.timer_freq = cpu_clk / 2; + + mt7620_dram_init(); +} + +void mt7620_get_clks(u32 *cpu_clk, u32 *sys_clk, u32 *xtal_clk) +{ + void __iomem *sysc = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE); + u32 val, multi, div, fdiv, ffrac, dram_type, sys_div; + u32 cpu_freq, xtal_freq; + + static const u32 div_ratio_table[] = {2, 3, 4, 8}; + + val = readl(sysc + SYSCTL_SYSCFG0_REG); + + dram_type = (val & DRAM_TYPE_M) >> DRAM_TYPE_S; + + if (val & XTAL_FREQ_SEL) + xtal_freq = 40000000; + else + xtal_freq = 20000000; + + val = readl(sysc + SYSCTL_CPLL_CFG1_REG); + if (val & CPU_CLK_AUX1) { + cpu_freq = xtal_freq; + } else if (val & CPU_CLK_AUX0) { + cpu_freq = 480000000; + } else { + val = readl(sysc + SYSCTL_CPLL_CFG0_REG); + if (val & CPLL_SW_CFG) { + multi = (val & PLL_MULT_RATIO_M) >> PLL_MULT_RATIO_S; + div = (val & PLL_DIV_RATIO_M) >> PLL_DIV_RATIO_S; + cpu_freq = (multi + 24) * 40000000 / + div_ratio_table[div]; + } else { + cpu_freq = 600000000; + } + } + + val = readl(sysc + SYSCTL_CUR_CLK_STS_REG); + ffrac = (val & CUR_CPU_FFRAC_M) >> CUR_CPU_FFRAC_S; + fdiv = (val & CUR_CPU_FDIV_M) >> CUR_CPU_FDIV_S; + cpu_freq = (cpu_freq * ffrac) / fdiv; + + switch (dram_type) { + case DRAM_SDRAM_E1: + sys_div = 4; + break; + case DRAM_DDR1: + case DRAM_DDR2: + sys_div = 3; + break; + case DRAM_SDRAM: + sys_div = 5; + break; + } + + if (cpu_clk) + *cpu_clk = cpu_freq; + + if (sys_clk) + *sys_clk = cpu_freq / sys_div; + + if (xtal_clk) + *xtal_clk = xtal_freq; +} + +int print_cpuinfo(void) +{ + void __iomem *sysc = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE); + u32 cpu_clk, bus_clk, xtal_clk; + u32 val, ver, eco, pkg, dram, chipmode; + const char *bootdev; + + val = readl(sysc + SYSCTL_CHIP_REV_ID_REG); + ver = (val & VER_M) >> VER_S; + eco = (val & ECO_M) >> ECO_S; + pkg = !!(val & PKG_ID); + + val = readl(sysc + SYSCTL_SYSCFG0_REG); + dram = (val & DRAM_TYPE_M) >> DRAM_TYPE_S; + chipmode = (val & CHIP_MODE_M) >> CHIP_MODE_S; + + bootdev = boot_mode[chipmode]; + if (!bootdev) + bootdev = "Unsupported boot mode"; + + printf("CPU: MediaTek MT7620%c ver:%u eco:%u\n", + pkg ? 'A' : 'N', ver, eco); + + printf("Boot: %s, %s\n", dram_type[dram], bootdev); + + mt7620_get_clks(&cpu_clk, &bus_clk, &xtal_clk); + + /* Set final timer frequency */ + gd->arch.timer_freq = cpu_clk / 2; + + printf("Clock: CPU: %uMHz, Bus: %uMHz, XTAL: %uMHz\n", + cpu_clk / 1000000, bus_clk / 1000000, xtal_clk / 1000000); + + return 0; +} + +ulong notrace get_tbclk(void) +{ + return gd->arch.timer_freq; +} + +void _machine_restart(void) +{ + void __iomem *sysc = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE); + + while (1) + writel(SYS_RST, sysc + SYSCTL_RSTCTL_REG); +} diff --git a/arch/mips/mach-mtmips/mt7620/lowlevel_init.S b/arch/mips/mach-mtmips/mt7620/lowlevel_init.S new file mode 100644 index 0000000000..399174620d --- /dev/null +++ b/arch/mips/mach-mtmips/mt7620/lowlevel_init.S @@ -0,0 +1,53 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao weijie.gao@mediatek.com + */ + +#include <config.h> +#include <asm-offsets.h> +#include <asm/regdef.h> +#include <asm/asm.h> + + .set noreorder + +NESTED(lowlevel_init, 0, ra) + /* Save ra and do real lowlevel initialization */ + move s0, ra + + /* + * Use SRAM from 802.11n MAC/BBP, 16KiB (0x10184000 ~ 0x10187fff) + * NOTE: non-word operations may fail in this SRAM. + * Use it as stack only for CPU/DRAM init which only has word operations. + */ + PTR_LI sp, 0xb0187f00 + + /* We still need a temporary gd for udelay */ + PTR_SUBU \ + sp, sp, GD_SIZE # reserve space for gd + li t0, -16 + and sp, sp, t0 # force 16 byte alignment + move k0, sp # save gd pointer + + move fp, sp + + /* Clear gd */ + move t0, k0 +1: + PTR_S zero, 0(t0) + PTR_ADDIU t0, PTRSIZE + blt t0, t1, 1b + nop + + /* Do CPU & DRAM initialization */ + PTR_LA t9, mt7620_init + jalr t9 + nop + + /* Restore ra */ + move ra, s0 + + jr ra + nop + END(lowlevel_init) diff --git a/arch/mips/mach-mtmips/mt7620/mt7620.h b/arch/mips/mach-mtmips/mt7620/mt7620.h new file mode 100644 index 0000000000..dd5e6d00e5 --- /dev/null +++ b/arch/mips/mach-mtmips/mt7620/mt7620.h @@ -0,0 +1,103 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 MediaTek Inc. All Rights Reserved. + * + * Author: Weijie Gao weijie.gao@mediatek.com + */ + +#ifndef _MT7620_H_ +#define _MT7620_H_ + +#include <linux/bitops.h> + +#define SYSCTL_BASE 0x10000000 +#define SYSCTL_SIZE 0x100 +#define MEMCTL_BASE 0x10000300 +#define MEMCTL_SIZE 0x100 +#define UARTFULL_BASE 0x10000500 +#define UARTFULL_SIZE 0x100 +#define UARTLITE_BASE 0x10000c00 +#define UARTLITE_SIZE 0x100 + +#define SYSCTL_CHIP_REV_ID_REG 0x0c +#define PKG_ID BIT(16) +#define PKG_ID_A 1 +#define PKG_ID_N 0 +#define VER_S 8 +#define VER_M GENMASK(11, 8) +#define ECO_S 0 +#define ECO_M GENMASK(3, 0) + +#define SYSCTL_SYSCFG0_REG 0x10 +#define XTAL_FREQ_SEL BIT(6) +#define XTAL_40MHZ 1 +#define XTAL_20MHZ 0 +#define DRAM_TYPE_S 4 +#define DRAM_TYPE_M GENMASK(5, 4) +#define DRAM_SDRAM 3 +#define DRAM_DDR2 2 +#define DRAM_DDR1 1 +#define DRAM_SDRAM_E1 0 +#define CHIP_MODE_S 0 +#define CHIP_MODE_M GENMASK(3, 0) + +#define SYSCTL_SYSCFG1_REG 0x14 +#define GE2_MODE_S 14 +#define GE2_MODE_M GENMASK(15, 14) +#define GE1_MODE_S 12 +#define GE1_MODE_M GENMASK(13, 12) +#define USB0_HOST_MODE BIT(10) +#define PCIE_RC_MODE BIT(8) +#define GE_MODE_M GENMASK(1, 0) + +#define SYSCTL_RSTCTL_REG 0x34 +#define MC_RST BIT(10) +#define SYS_RST BIT(0) + +#define SYSCTL_CLKCFG0_REG 0x2c +#define PERI_CLK_SEL BIT(4) + +#define SYSCTL_CPU_SYS_CLKCFG_REG 0x3c +#define CPU_OCP_RATIO_S 16 +#define CPU_OCP_RATIO_M GENMASK(19, 16) +#define CPU_FDIV_S 8 +#define CPU_FDIV_M GENMASK(12, 8) +#define CPU_FFRAC_S 0 +#define CPU_FFRAC_M GENMASK(4, 0) + +#define SYSCTL_CUR_CLK_STS_REG 0x44 +#define CUR_CPU_OCP_RATIO_S 16 +#define CUR_CPU_OCP_RATIO_M GENMASK(19, 16) +#define CUR_CPU_FDIV_S 8 +#define CUR_CPU_FDIV_M GENMASK(12, 8) +#define CUR_CPU_FFRAC_S 0 +#define CUR_CPU_FFRAC_M GENMASK(4, 0) + +#define SYSCTL_CPLL_CFG0_REG 0x54 +#define CPLL_SW_CFG BIT(31) +#define PLL_MULT_RATIO_S 16 +#define PLL_MULT_RATIO_M GENMASK(18, 16) +#define PLL_DIV_RATIO_S 10 +#define PLL_DIV_RATIO_M GENMASK(11, 10) +#define SSC_UP_BOUND_S 8 +#define SSC_UP_BOUND_M GENMASK(9, 8) +#define SSC_EN BIT(7) +#define SSC_SWING_S 4 +#define SSC_SWING_M GENMASK(6, 4) + +#define SYSCTL_CPLL_CFG1_REG 0x58 +#define CPLL_PD BIT(26) +#define CPU_CLK_AUX1 BIT(25) +#define CPU_CLK_AUX0 BIT(24) +#define CPLL_LD BIT(23) + +#define SYSCTL_GPIOMODE_REG 0x60 +#define UARTL_GPIO_MODE BIT(5) +#define UARTF_SHARE_MODE_S 2 +#define UARTF_SHARE_MODE_M GENMASK(4, 2) +#define UARTF_MODE_UARTF_GPIO 5 + +void mt7620_dram_init(void); +void mt7620_get_clks(u32 *cpu_clk, u32 *sys_clk, u32 *xtal_clk); + +#endif /* _MT7620_H_ */ diff --git a/arch/mips/mach-mtmips/mt7620/serial.c b/arch/mips/mach-mtmips/mt7620/serial.c new file mode 100644 index 0000000000..44f061cd6c --- /dev/null +++ b/arch/mips/mach-mtmips/mt7620/serial.c @@ -0,0 +1,36 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 MediaTek Inc. + * + * Author: Weijie Gao weijie.gao@mediatek.com + */ + +#include <asm/io.h> +#include <asm/addrspace.h> +#include "mt7620.h" + +void board_debug_uart_init(void) +{ + void __iomem *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE); + +#if CONFIG_DEBUG_UART_BASE == 0xb0000500 /* KSEG1ADDR(UARTFULL_BASE) */ + clrsetbits_32(base + SYSCTL_GPIOMODE_REG, UARTF_SHARE_MODE_M, + UARTF_MODE_UARTF_GPIO << UARTF_SHARE_MODE_S); +#else + clrbits_32(base + SYSCTL_GPIOMODE_REG, UARTL_GPIO_MODE); +#endif +} + +void mtmips_spl_serial_init(void) +{ +#ifdef CONFIG_SPL_SERIAL_SUPPORT + void __iomem *base = ioremap_nocache(SYSCTL_BASE, SYSCTL_SIZE); + +#if CONFIG_CONS_INDEX == 1 + clrbits_32(base + SYSCTL_GPIOMODE_REG, UARTL_GPIO_MODE); +#elif CONFIG_CONS_INDEX == 2 + clrsetbits_32(base + SYSCTL_GPIOMODE_REG, UARTF_SHARE_MODE_M, + UARTF_MODE_UARTF_GPIO << UARTF_SHARE_MODE_S); +#endif +#endif /* CONFIG_SPL_SERIAL_SUPPORT */ +} diff --git a/arch/mips/mach-mtmips/mt7620/sysc.c b/arch/mips/mach-mtmips/mt7620/sysc.c new file mode 100644 index 0000000000..4de01b72be --- /dev/null +++ b/arch/mips/mach-mtmips/mt7620/sysc.c @@ -0,0 +1,172 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 MediaTek Inc. All Rights Reserved. + * + * Author: Weijie Gao weijie.gao@mediatek.com + * + * Misc driver for manipulating System control registers + */ + +#include <dm.h> +#include <misc.h> +#include <asm/io.h> +#include <asm/addrspace.h> +#include <dm/device_compat.h> +#include <mach/mt7620-sysc.h> +#include "mt7620.h" + +struct mt7620_sysc_priv { + void __iomem *base; +}; + +static int mt7620_sysc_read(struct udevice *dev, int offset, void *buf, + int size) +{ + struct mt7620_sysc_priv *priv = dev_get_priv(dev); + u32 val; + + if (offset % sizeof(u32) || size != sizeof(u32) || + offset >= SYSCTL_SIZE) + return -EINVAL; + + val = readl(priv->base + offset); + + if (buf) + *(u32 *)buf = val; + + return 0; +} + +static int mt7620_sysc_write(struct udevice *dev, int offset, const void *buf, + int size) +{ + struct mt7620_sysc_priv *priv = dev_get_priv(dev); + u32 val; + + if (offset % sizeof(u32) || size != sizeof(u32) || + offset >= SYSCTL_SIZE || !buf) + return -EINVAL; + + val = *(u32 *)buf; + writel(val, priv->base + offset); + + return 0; +} + +static int mt7620_sysc_ioctl(struct udevice *dev, unsigned long request, + void *buf) +{ + struct mt7620_sysc_priv *priv = dev_get_priv(dev); + struct mt7620_sysc_chip_rev *chip_rev; + struct mt7620_sysc_clks *clks; + u32 val, shift; + + if (!buf) + return -EINVAL; + + switch (request) { + case MT7620_SYSC_IOCTL_GET_CLK: + clks = buf; + mt7620_get_clks(&clks->cpu_clk, &clks->sys_clk, + &clks->xtal_clk); + + val = readl(priv->base + SYSCTL_CLKCFG0_REG); + if (val & PERI_CLK_SEL) + clks->peri_clk = clks->xtal_clk; + else + clks->peri_clk = 40000000; + + return 0; + + case MT7620_SYSC_IOCTL_GET_CHIP_REV: + chip_rev = buf; + + val = readl(priv->base + SYSCTL_CHIP_REV_ID_REG); + + chip_rev->bga = !!(val & PKG_ID); + chip_rev->ver = (val & VER_M) >> VER_S; + chip_rev->eco = (val & ECO_M) >> ECO_S; + + return 0; + + case MT7620_SYSC_IOCTL_SET_GE1_MODE: + case MT7620_SYSC_IOCTL_SET_GE2_MODE: + val = *(u32 *)buf; + + if (val > MT7620_SYSC_GE_ESW_PHY) + return -EINVAL; + + if (request == MT7620_SYSC_IOCTL_SET_GE1_MODE) + shift = GE1_MODE_S; + else + shift = GE2_MODE_S; + + clrsetbits_32(priv->base + SYSCTL_SYSCFG1_REG, + GE_MODE_M << shift, val << shift); + + return 0; + + case MT7620_SYSC_IOCTL_SET_USB_MODE: + val = *(u32 *)buf; + + if (val == MT7620_SYSC_USB_DEVICE_MODE) + val = 0; + else if (val == MT7620_SYSC_USB_HOST_MODE) + val = USB0_HOST_MODE; + + clrsetbits_32(priv->base + SYSCTL_SYSCFG1_REG, + USB0_HOST_MODE, val); + + return 0; + + case MT7620_SYSC_IOCTL_SET_PCIE_MODE: + val = *(u32 *)buf; + + if (val == MT7620_SYSC_PCIE_EP_MODE) + val = 0; + else if (val == MT7620_SYSC_PCIE_RC_MODE) + val = PCIE_RC_MODE; + + clrsetbits_32(priv->base + SYSCTL_SYSCFG1_REG, + PCIE_RC_MODE, val); + + return 0; + + default: + return -EINVAL; + } +} + +static int mt7620_sysc_probe(struct udevice *dev) +{ + struct mt7620_sysc_priv *priv = dev_get_priv(dev); + + priv->base = dev_remap_addr_index(dev, 0); + if (!priv->base) { + dev_err(dev, "failed to map sysc registers\n"); + return -EINVAL; + } + + return 0; +} + +static struct misc_ops mt7620_sysc_ops = { + .read = mt7620_sysc_read, + .write = mt7620_sysc_write, + .ioctl = mt7620_sysc_ioctl, +}; + +static const struct udevice_id mt7620_sysc_ids[] = { + { .compatible = "mediatek,mt7620-sysc" }, + { } +}; + +U_BOOT_DRIVER(mt7620_sysc) = { + .name = "mt7620_sysc", + .id = UCLASS_MISC, + .of_match = mt7620_sysc_ids, + .probe = mt7620_sysc_probe, + .ops = &mt7620_sysc_ops, + .priv_auto_alloc_size = sizeof(struct mt7620_sysc_priv), + .flags = DM_FLAG_PRE_RELOC, +}; diff --git a/include/configs/mt7620.h b/include/configs/mt7620.h new file mode 100644 index 0000000000..4d074a3688 --- /dev/null +++ b/include/configs/mt7620.h @@ -0,0 +1,46 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 MediaTek Inc. All Rights Reserved. + * + * Author: Weijie Gao weijie.gao@mediatek.com + */ + +#ifndef __CONFIG_MT7620_H +#define __CONFIG_MT7620_H + +#define CONFIG_SYS_HZ 1000 +#define CONFIG_SYS_MIPS_TIMER_FREQ 290000000 + +#define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_TEXT_BASE + +#define CONFIG_SYS_MALLOC_LEN 0x100000 +#define CONFIG_SYS_BOOTPARAMS_LEN 0x20000 + +#define CONFIG_SYS_SDRAM_BASE 0x80000000 +#define CONFIG_SYS_LOAD_ADDR 0x80010000 + +#define CONFIG_SYS_INIT_SP_OFFSET 0x400000 + +#define CONFIG_SYS_BOOTM_LEN 0x1000000 + +#define CONFIG_SYS_MAXARGS 16 +#define CONFIG_SYS_CBSIZE 1024 + +/* Serial common */ +#define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 } + +/* SPL */ +#if defined(CONFIG_SPL) && !defined(CONFIG_SPL_BUILD) +#define CONFIG_SKIP_LOWLEVEL_INIT +#endif + +#define CONFIG_SYS_UBOOT_START CONFIG_SYS_TEXT_BASE +#define CONFIG_SPL_BSS_START_ADDR 0x80010000 +#define CONFIG_SPL_BSS_MAX_SIZE 0x10000 +#define CONFIG_SPL_MAX_SIZE 0x10000 +#define CONFIG_SPL_PAD_TO 0 + +/* Dummy value */ +#define CONFIG_SYS_UBOOT_BASE 0 + +#endif /* __CONFIG_MT7620_H */