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openwrt/target/linux/ramips/patches-3.18/0026-MIPS-ralink-add-mt7628an-support.patch
Hauke Mehrtens 0b8643af4f kernel: update 3.18 to 3.18.20 
Changelog:
 * https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.18.20

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

SVN-Revision: 46570
2015-08-09 11:09:52 +00:00

399 lines
12 KiB
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Raw Blame History

From a375beba066516ecafddebc765454ac6ec599f3d Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Wed, 6 Aug 2014 18:26:08 +0200
Subject: [PATCH 26/57] MIPS: ralink: add mt7628an support
Signed-off-by: John Crispin <blogic@openwrt.org>
---
arch/mips/include/asm/mach-ralink/mt7620.h | 11 ++
arch/mips/ralink/Kconfig | 2 +-
arch/mips/ralink/mt7620.c | 266 +++++++++++++++++++++++-----
3 files changed, 232 insertions(+), 47 deletions(-)
--- a/arch/mips/include/asm/mach-ralink/mt7620.h
+++ b/arch/mips/include/asm/mach-ralink/mt7620.h
@@ -13,6 +13,13 @@
#ifndef _MT7620_REGS_H_
#define _MT7620_REGS_H_
+enum mt762x_soc_type {
+ MT762X_SOC_UNKNOWN = 0,
+ MT762X_SOC_MT7620A,
+ MT762X_SOC_MT7620N,
+ MT762X_SOC_MT7628AN,
+};
+
#define MT7620_SYSC_BASE 0x10000000
#define SYSC_REG_CHIP_NAME0 0x00
@@ -27,6 +34,7 @@
#define MT7620_CHIP_NAME0 0x3637544d
#define MT7620_CHIP_NAME1 0x20203032
+#define MT7628_CHIP_NAME1 0x20203832
#define SYSCFG0_XTAL_FREQ_SEL BIT(6)
@@ -71,6 +79,9 @@
#define SYSCFG0_DRAM_TYPE_DDR1 1
#define SYSCFG0_DRAM_TYPE_DDR2 2
+#define SYSCFG0_DRAM_TYPE_DDR2_MT7628 0
+#define SYSCFG0_DRAM_TYPE_DDR1_MT7628 1
+
#define MT7620_DRAM_BASE 0x0
#define MT7620_SDRAM_SIZE_MIN 2
#define MT7620_SDRAM_SIZE_MAX 64
--- a/arch/mips/ralink/Kconfig
+++ b/arch/mips/ralink/Kconfig
@@ -41,7 +41,7 @@ choice
select HW_HAS_PCI
config SOC_MT7620
- bool "MT7620"
+ bool "MT7620/8"
config SOC_MT7621
bool "MT7621"
--- a/arch/mips/ralink/mt7620.c
+++ b/arch/mips/ralink/mt7620.c
@@ -42,6 +42,8 @@
#define CLKCFG_FFRAC_MASK 0x001f
#define CLKCFG_FFRAC_USB_VAL 0x0003
+enum mt762x_soc_type mt762x_soc;
+
/* does the board have sdram or ddram */
static int dram_type;
@@ -159,6 +161,125 @@ struct ralink_pinmux rt_gpio_pinmux = {
.uart_mask = MT7620_GPIO_MODE_UART0_MASK,
};
+static struct rt2880_pmx_func pwm1_grp_mt7628[] = {
+ FUNC("sdxc", 3, 19, 1),
+ FUNC("utif", 2, 19, 1),
+ FUNC("gpio", 1, 19, 1),
+ FUNC("pwm", 0, 19, 1),
+};
+
+static struct rt2880_pmx_func pwm0_grp_mt7628[] = {
+ FUNC("sdxc", 3, 18, 1),
+ FUNC("utif", 2, 18, 1),
+ FUNC("gpio", 1, 18, 1),
+ FUNC("pwm", 0, 18, 1),
+};
+
+static struct rt2880_pmx_func uart2_grp_mt7628[] = {
+ FUNC("sdxc", 3, 20, 2),
+ FUNC("pwm", 2, 20, 2),
+ FUNC("gpio", 1, 20, 2),
+ FUNC("uart2", 0, 20, 2),
+};
+
+static struct rt2880_pmx_func uart1_grp_mt7628[] = {
+ FUNC("sdxc", 3, 45, 2),
+ FUNC("pwm", 2, 45, 2),
+ FUNC("gpio", 1, 45, 2),
+ FUNC("uart1", 0, 45, 2),
+};
+
+static struct rt2880_pmx_func i2c_grp_mt7628[] = {
+ FUNC("-", 3, 4, 2),
+ FUNC("debug", 2, 4, 2),
+ FUNC("gpio", 1, 4, 2),
+ FUNC("i2c", 0, 4, 2),
+};
+
+static struct rt2880_pmx_func refclk_grp_mt7628[] = { FUNC("reclk", 0, 36, 1) };
+static struct rt2880_pmx_func perst_grp_mt7628[] = { FUNC("perst", 0, 37, 1) };
+static struct rt2880_pmx_func wdt_grp_mt7628[] = { FUNC("wdt", 0, 38, 1) };
+static struct rt2880_pmx_func spi_grp_mt7628[] = { FUNC("spi", 0, 7, 4) };
+
+static struct rt2880_pmx_func sd_mode_grp_mt7628[] = {
+ FUNC("jtag", 3, 22, 8),
+ FUNC("utif", 2, 22, 8),
+ FUNC("gpio", 1, 22, 8),
+ FUNC("sdxc", 0, 22, 8),
+};
+
+static struct rt2880_pmx_func uart0_grp_mt7628[] = {
+ FUNC("-", 3, 12, 2),
+ FUNC("-", 2, 12, 2),
+ FUNC("gpio", 1, 12, 2),
+ FUNC("uart0", 0, 12, 2),
+};
+
+static struct rt2880_pmx_func i2s_grp_mt7628[] = {
+ FUNC("antenna", 3, 0, 4),
+ FUNC("pcm", 2, 0, 4),
+ FUNC("gpio", 1, 0, 4),
+ FUNC("i2s", 0, 0, 4),
+};
+
+static struct rt2880_pmx_func spi_cs1_grp_mt7628[] = {
+ FUNC("-", 3, 6, 1),
+ FUNC("refclk", 2, 6, 1),
+ FUNC("gpio", 1, 6, 1),
+ FUNC("spi", 0, 6, 1),
+};
+
+static struct rt2880_pmx_func spis_grp_mt7628[] = {
+ FUNC("pwm", 3, 14, 4),
+ FUNC("util", 2, 14, 4),
+ FUNC("gpio", 1, 14, 4),
+ FUNC("spis", 0, 14, 4),
+};
+
+static struct rt2880_pmx_func gpio_grp_mt7628[] = {
+ FUNC("pcie", 3, 11, 1),
+ FUNC("refclk", 2, 11, 1),
+ FUNC("gpio", 1, 11, 1),
+ FUNC("gpio", 0, 11, 1),
+};
+
+#define MT7628_GPIO_MODE_MASK 0x3
+
+#define MT7628_GPIO_MODE_PWM1 30
+#define MT7628_GPIO_MODE_PWM0 28
+#define MT7628_GPIO_MODE_UART2 26
+#define MT7628_GPIO_MODE_UART1 24
+#define MT7628_GPIO_MODE_I2C 20
+#define MT7628_GPIO_MODE_REFCLK 18
+#define MT7628_GPIO_MODE_PERST 16
+#define MT7628_GPIO_MODE_WDT 14
+#define MT7628_GPIO_MODE_SPI 12
+#define MT7628_GPIO_MODE_SDMODE 10
+#define MT7628_GPIO_MODE_UART0 8
+#define MT7628_GPIO_MODE_I2S 6
+#define MT7628_GPIO_MODE_CS1 4
+#define MT7628_GPIO_MODE_SPIS 2
+#define MT7628_GPIO_MODE_GPIO 0
+
+static struct rt2880_pmx_group mt7628an_pinmux_data[] = {
+ GRP_G("pmw1", pwm1_grp_mt7628, MT7628_GPIO_MODE_MASK, 1, MT7628_GPIO_MODE_PWM1),
+ GRP_G("pmw0", pwm0_grp_mt7628, MT7628_GPIO_MODE_MASK, 1, MT7628_GPIO_MODE_PWM0),
+ GRP_G("uart2", uart2_grp_mt7628, MT7628_GPIO_MODE_MASK, 1, MT7628_GPIO_MODE_UART2),
+ GRP_G("uart1", uart1_grp_mt7628, MT7628_GPIO_MODE_MASK, 1, MT7628_GPIO_MODE_UART1),
+ GRP_G("i2c", i2c_grp_mt7628, MT7628_GPIO_MODE_MASK, 1, MT7628_GPIO_MODE_I2C),
+ GRP("refclk", refclk_grp_mt7628, 1, MT7628_GPIO_MODE_REFCLK),
+ GRP("perst", perst_grp_mt7628, 1, MT7628_GPIO_MODE_PERST),
+ GRP("wdt", wdt_grp_mt7628, 1, MT7628_GPIO_MODE_WDT),
+ GRP("spi", spi_grp_mt7628, 1, MT7628_GPIO_MODE_SPI),
+ GRP_G("sdmode", sd_mode_grp_mt7628, MT7628_GPIO_MODE_MASK, 1, MT7628_GPIO_MODE_SDMODE),
+ GRP_G("uart0", uart0_grp_mt7628, MT7628_GPIO_MODE_MASK, 1, MT7628_GPIO_MODE_UART0),
+ GRP_G("i2s", i2s_grp_mt7628, MT7628_GPIO_MODE_MASK, 1, MT7628_GPIO_MODE_I2S),
+ GRP_G("spi cs1", spi_cs1_grp_mt7628, MT7628_GPIO_MODE_MASK, 1, MT7628_GPIO_MODE_CS1),
+ GRP_G("spis", spis_grp_mt7628, MT7628_GPIO_MODE_MASK, 1, MT7628_GPIO_MODE_SPIS),
+ GRP_G("gpio", gpio_grp_mt7628, MT7628_GPIO_MODE_MASK, 1, MT7628_GPIO_MODE_GPIO),
+ { 0 }
+};
+
static __init u32
mt7620_calc_rate(u32 ref_rate, u32 mul, u32 div)
{
@@ -309,29 +430,42 @@ void __init ralink_clk_init(void)
xtal_rate = mt7620_get_xtal_rate();
- cpu_pll_rate = mt7620_get_cpu_pll_rate(xtal_rate);
- pll_rate = mt7620_get_pll_rate(xtal_rate, cpu_pll_rate);
-
- cpu_rate = mt7620_get_cpu_rate(pll_rate);
- dram_rate = mt7620_get_dram_rate(pll_rate);
- sys_rate = mt7620_get_sys_rate(cpu_rate);
- periph_rate = mt7620_get_periph_rate(xtal_rate);
-
#define RFMT(label) label ":%lu.%03luMHz "
#define RINT(x) ((x) / 1000000)
#define RFRAC(x) (((x) / 1000) % 1000)
- pr_debug(RFMT("XTAL") RFMT("CPU_PLL") RFMT("PLL"),
- RINT(xtal_rate), RFRAC(xtal_rate),
- RINT(cpu_pll_rate), RFRAC(cpu_pll_rate),
- RINT(pll_rate), RFRAC(pll_rate));
+ if (mt762x_soc == MT762X_SOC_MT7628AN) {
+ if (xtal_rate == MHZ(40))
+ cpu_rate = MHZ(580);
+ else
+ cpu_rate = MHZ(575);
+ dram_rate = sys_rate = cpu_rate / 3;
+ periph_rate = MHZ(40);
+
+ ralink_clk_add("10000d00.uartlite", periph_rate);
+ ralink_clk_add("10000e00.uartlite", periph_rate);
+ } else {
+ cpu_pll_rate = mt7620_get_cpu_pll_rate(xtal_rate);
+ pll_rate = mt7620_get_pll_rate(xtal_rate, cpu_pll_rate);
+
+ cpu_rate = mt7620_get_cpu_rate(pll_rate);
+ dram_rate = mt7620_get_dram_rate(pll_rate);
+ sys_rate = mt7620_get_sys_rate(cpu_rate);
+ periph_rate = mt7620_get_periph_rate(xtal_rate);
+
+ pr_debug(RFMT("XTAL") RFMT("CPU_PLL") RFMT("PLL"),
+ RINT(xtal_rate), RFRAC(xtal_rate),
+ RINT(cpu_pll_rate), RFRAC(cpu_pll_rate),
+ RINT(pll_rate), RFRAC(pll_rate));
+
+ ralink_clk_add("10000500.uart", periph_rate);
+ }
pr_debug(RFMT("CPU") RFMT("DRAM") RFMT("SYS") RFMT("PERIPH"),
RINT(cpu_rate), RFRAC(cpu_rate),
RINT(dram_rate), RFRAC(dram_rate),
RINT(sys_rate), RFRAC(sys_rate),
RINT(periph_rate), RFRAC(periph_rate));
-
#undef RFRAC
#undef RINT
#undef RFMT
@@ -339,12 +473,13 @@ void __init ralink_clk_init(void)
ralink_clk_add("cpu", cpu_rate);
ralink_clk_add("10000100.timer", periph_rate);
ralink_clk_add("10000120.watchdog", periph_rate);
- ralink_clk_add("10000500.uart", periph_rate);
ralink_clk_add("10000b00.spi", sys_rate);
ralink_clk_add("10000c00.uartlite", periph_rate);
+ ralink_clk_add("10000d00.uart1", periph_rate);
+ ralink_clk_add("10000e00.uart2", periph_rate);
ralink_clk_add("10180000.wmac", xtal_rate);
- if (IS_ENABLED(CONFIG_USB)) {
+ if (IS_ENABLED(CONFIG_USB) && mt762x_soc != MT762X_SOC_MT7628AN) {
/*
* When the CPU goes into sleep mode, the BUS clock will be too low for
* USB to function properly
@@ -367,6 +502,52 @@ void __init ralink_of_remap(void)
panic("Failed to remap core resources");
}
+static __init void
+mt7620_dram_init(struct ralink_soc_info *soc_info)
+{
+ switch (dram_type) {
+ case SYSCFG0_DRAM_TYPE_SDRAM:
+ pr_info("Board has SDRAM\n");
+ soc_info->mem_size_min = MT7620_SDRAM_SIZE_MIN;
+ soc_info->mem_size_max = MT7620_SDRAM_SIZE_MAX;
+ break;
+
+ case SYSCFG0_DRAM_TYPE_DDR1:
+ pr_info("Board has DDR1\n");
+ soc_info->mem_size_min = MT7620_DDR1_SIZE_MIN;
+ soc_info->mem_size_max = MT7620_DDR1_SIZE_MAX;
+ break;
+
+ case SYSCFG0_DRAM_TYPE_DDR2:
+ pr_info("Board has DDR2\n");
+ soc_info->mem_size_min = MT7620_DDR2_SIZE_MIN;
+ soc_info->mem_size_max = MT7620_DDR2_SIZE_MAX;
+ break;
+ default:
+ BUG();
+ }
+}
+
+static __init void
+mt7628_dram_init(struct ralink_soc_info *soc_info)
+{
+ switch (dram_type) {
+ case SYSCFG0_DRAM_TYPE_DDR1_MT7628:
+ pr_info("Board has DDR1\n");
+ soc_info->mem_size_min = MT7620_DDR1_SIZE_MIN;
+ soc_info->mem_size_max = MT7620_DDR1_SIZE_MAX;
+ break;
+
+ case SYSCFG0_DRAM_TYPE_DDR2_MT7628:
+ pr_info("Board has DDR2\n");
+ soc_info->mem_size_min = MT7620_DDR2_SIZE_MIN;
+ soc_info->mem_size_max = MT7620_DDR2_SIZE_MAX;
+ break;
+ default:
+ BUG();
+ }
+}
+
void prom_soc_init(struct ralink_soc_info *soc_info)
{
void __iomem *sysc = (void __iomem *) KSEG1ADDR(MT7620_SYSC_BASE);
@@ -384,18 +565,25 @@ void prom_soc_init(struct ralink_soc_inf
rev = __raw_readl(sysc + SYSC_REG_CHIP_REV);
bga = (rev >> CHIP_REV_PKG_SHIFT) & CHIP_REV_PKG_MASK;
- if (n0 != MT7620_CHIP_NAME0 || n1 != MT7620_CHIP_NAME1)
- panic("mt7620: unknown SoC, n0:%08x n1:%08x\n", n0, n1);
-
- if (bga) {
- name = "MT7620A";
- soc_info->compatible = "ralink,mt7620a-soc";
- } else {
- name = "MT7620N";
- soc_info->compatible = "ralink,mt7620n-soc";
+ if (n0 == MT7620_CHIP_NAME0 && n1 == MT7620_CHIP_NAME1) {
+ if (bga) {
+ mt762x_soc = MT762X_SOC_MT7620A;
+ name = "MT7620A";
+ soc_info->compatible = "ralink,mt7620a-soc";
+ } else {
+ mt762x_soc = MT762X_SOC_MT7620N;
+ name = "MT7620N";
+ soc_info->compatible = "ralink,mt7620n-soc";
#ifdef CONFIG_PCI
- panic("mt7620n is only supported for non pci kernels");
+ panic("mt7620n is only supported for non pci kernels");
#endif
+ }
+ } else if (n0 == MT7620_CHIP_NAME0 && n1 == MT7628_CHIP_NAME1) {
+ mt762x_soc = MT762X_SOC_MT7628AN;
+ name = "MT7628AN";
+ soc_info->compatible = "ralink,mt7628an-soc";
+ } else {
+ panic("mt762x: unknown SoC, n0:%08x n1:%08x\n", n0, n1);
}
snprintf(soc_info->sys_type, RAMIPS_SYS_TYPE_LEN,
@@ -407,28 +595,11 @@ void prom_soc_init(struct ralink_soc_inf
cfg0 = __raw_readl(sysc + SYSC_REG_SYSTEM_CONFIG0);
dram_type = (cfg0 >> SYSCFG0_DRAM_TYPE_SHIFT) & SYSCFG0_DRAM_TYPE_MASK;
- switch (dram_type) {
- case SYSCFG0_DRAM_TYPE_SDRAM:
- pr_info("Board has SDRAM\n");
- soc_info->mem_size_min = MT7620_SDRAM_SIZE_MIN;
- soc_info->mem_size_max = MT7620_SDRAM_SIZE_MAX;
- break;
-
- case SYSCFG0_DRAM_TYPE_DDR1:
- pr_info("Board has DDR1\n");
- soc_info->mem_size_min = MT7620_DDR1_SIZE_MIN;
- soc_info->mem_size_max = MT7620_DDR1_SIZE_MAX;
- break;
-
- case SYSCFG0_DRAM_TYPE_DDR2:
- pr_info("Board has DDR2\n");
- soc_info->mem_size_min = MT7620_DDR2_SIZE_MIN;
- soc_info->mem_size_max = MT7620_DDR2_SIZE_MAX;
- break;
- default:
- BUG();
- }
soc_info->mem_base = MT7620_DRAM_BASE;
+ if (mt762x_soc == MT762X_SOC_MT7628AN)
+ mt7628_dram_init(soc_info);
+ else
+ mt7620_dram_init(soc_info);
pmu0 = __raw_readl(sysc + PMU0_CFG);
pmu1 = __raw_readl(sysc + PMU1_CFG);
@@ -437,4 +608,9 @@ void prom_soc_init(struct ralink_soc_inf
(pmu0 & PMU_SW_SET) ? ("sw") : ("hw"));
pr_info("Digital PMU set to %s control\n",
(pmu1 & DIG_SW_SEL) ? ("sw") : ("hw"));
+
+ if (mt762x_soc == MT762X_SOC_MT7628AN)
+ rt2880_pinmux_data = mt7628an_pinmux_data;
+ else
+ rt2880_pinmux_data = mt7620a_pinmux_data;
}
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