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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/mips/ralink/mt7620.c
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/mips/ralink/mt7620.c')
-rw-r--r--kernel/arch/mips/ralink/mt7620.c548
1 files changed, 548 insertions, 0 deletions
diff --git a/kernel/arch/mips/ralink/mt7620.c b/kernel/arch/mips/ralink/mt7620.c
new file mode 100644
index 000000000..2ea5ff6dc
--- /dev/null
+++ b/kernel/arch/mips/ralink/mt7620.c
@@ -0,0 +1,548 @@
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * Parts of this file are based on Ralink's 2.6.21 BSP
+ *
+ * Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
+ * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/module.h>
+
+#include <asm/mipsregs.h>
+#include <asm/mach-ralink/ralink_regs.h>
+#include <asm/mach-ralink/mt7620.h>
+#include <asm/mach-ralink/pinmux.h>
+
+#include "common.h"
+
+/* analog */
+#define PMU0_CFG 0x88
+#define PMU_SW_SET BIT(28)
+#define A_DCDC_EN BIT(24)
+#define A_SSC_PERI BIT(19)
+#define A_SSC_GEN BIT(18)
+#define A_SSC_M 0x3
+#define A_SSC_S 16
+#define A_DLY_M 0x7
+#define A_DLY_S 8
+#define A_VTUNE_M 0xff
+
+/* digital */
+#define PMU1_CFG 0x8C
+#define DIG_SW_SEL BIT(25)
+
+/* is this a MT7620 or a MT7628 */
+enum mt762x_soc_type mt762x_soc;
+
+/* does the board have sdram or ddram */
+static int dram_type;
+
+static struct rt2880_pmx_func i2c_grp[] = { FUNC("i2c", 0, 1, 2) };
+static struct rt2880_pmx_func spi_grp[] = { FUNC("spi", 0, 3, 4) };
+static struct rt2880_pmx_func uartlite_grp[] = { FUNC("uartlite", 0, 15, 2) };
+static struct rt2880_pmx_func mdio_grp[] = { FUNC("mdio", 0, 22, 2) };
+static struct rt2880_pmx_func rgmii1_grp[] = { FUNC("rgmii1", 0, 24, 12) };
+static struct rt2880_pmx_func refclk_grp[] = { FUNC("spi refclk", 0, 37, 3) };
+static struct rt2880_pmx_func ephy_grp[] = { FUNC("ephy", 0, 40, 5) };
+static struct rt2880_pmx_func rgmii2_grp[] = { FUNC("rgmii2", 0, 60, 12) };
+static struct rt2880_pmx_func wled_grp[] = { FUNC("wled", 0, 72, 1) };
+static struct rt2880_pmx_func pa_grp[] = { FUNC("pa", 0, 18, 4) };
+static struct rt2880_pmx_func uartf_grp[] = {
+ FUNC("uartf", MT7620_GPIO_MODE_UARTF, 7, 8),
+ FUNC("pcm uartf", MT7620_GPIO_MODE_PCM_UARTF, 7, 8),
+ FUNC("pcm i2s", MT7620_GPIO_MODE_PCM_I2S, 7, 8),
+ FUNC("i2s uartf", MT7620_GPIO_MODE_I2S_UARTF, 7, 8),
+ FUNC("pcm gpio", MT7620_GPIO_MODE_PCM_GPIO, 11, 4),
+ FUNC("gpio uartf", MT7620_GPIO_MODE_GPIO_UARTF, 7, 4),
+ FUNC("gpio i2s", MT7620_GPIO_MODE_GPIO_I2S, 7, 4),
+};
+static struct rt2880_pmx_func wdt_grp[] = {
+ FUNC("wdt rst", 0, 17, 1),
+ FUNC("wdt refclk", 0, 17, 1),
+ };
+static struct rt2880_pmx_func pcie_rst_grp[] = {
+ FUNC("pcie rst", MT7620_GPIO_MODE_PCIE_RST, 36, 1),
+ FUNC("pcie refclk", MT7620_GPIO_MODE_PCIE_REF, 36, 1)
+};
+static struct rt2880_pmx_func nd_sd_grp[] = {
+ FUNC("nand", MT7620_GPIO_MODE_NAND, 45, 15),
+ FUNC("sd", MT7620_GPIO_MODE_SD, 45, 15)
+};
+
+static struct rt2880_pmx_group mt7620a_pinmux_data[] = {
+ GRP("i2c", i2c_grp, 1, MT7620_GPIO_MODE_I2C),
+ GRP("uartf", uartf_grp, MT7620_GPIO_MODE_UART0_MASK,
+ MT7620_GPIO_MODE_UART0_SHIFT),
+ GRP("spi", spi_grp, 1, MT7620_GPIO_MODE_SPI),
+ GRP("uartlite", uartlite_grp, 1, MT7620_GPIO_MODE_UART1),
+ GRP_G("wdt", wdt_grp, MT7620_GPIO_MODE_WDT_MASK,
+ MT7620_GPIO_MODE_WDT_GPIO, MT7620_GPIO_MODE_WDT_SHIFT),
+ GRP("mdio", mdio_grp, 1, MT7620_GPIO_MODE_MDIO),
+ GRP("rgmii1", rgmii1_grp, 1, MT7620_GPIO_MODE_RGMII1),
+ GRP("spi refclk", refclk_grp, 1, MT7620_GPIO_MODE_SPI_REF_CLK),
+ GRP_G("pcie", pcie_rst_grp, MT7620_GPIO_MODE_PCIE_MASK,
+ MT7620_GPIO_MODE_PCIE_GPIO, MT7620_GPIO_MODE_PCIE_SHIFT),
+ GRP_G("nd_sd", nd_sd_grp, MT7620_GPIO_MODE_ND_SD_MASK,
+ MT7620_GPIO_MODE_ND_SD_GPIO, MT7620_GPIO_MODE_ND_SD_SHIFT),
+ GRP("rgmii2", rgmii2_grp, 1, MT7620_GPIO_MODE_RGMII2),
+ GRP("wled", wled_grp, 1, MT7620_GPIO_MODE_WLED),
+ GRP("ephy", ephy_grp, 1, MT7620_GPIO_MODE_EPHY),
+ GRP("pa", pa_grp, 1, MT7620_GPIO_MODE_PA),
+ { 0 }
+};
+
+static struct rt2880_pmx_func pwm1_grp_mt7628[] = {
+ FUNC("sdcx", 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("sdcx", 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("sdcx", 3, 20, 2),
+ FUNC("pwm", 2, 20, 2),
+ FUNC("gpio", 1, 20, 2),
+ FUNC("uart", 0, 20, 2),
+};
+
+static struct rt2880_pmx_func uart1_grp_mt7628[] = {
+ FUNC("sdcx", 3, 45, 2),
+ FUNC("pwm", 2, 45, 2),
+ FUNC("gpio", 1, 45, 2),
+ FUNC("uart", 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, 15, 38) };
+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("sdcx", 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("uart", 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("pmw1", 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)
+{
+ u64 t;
+
+ t = ref_rate;
+ t *= mul;
+ do_div(t, div);
+
+ return t;
+}
+
+#define MHZ(x) ((x) * 1000 * 1000)
+
+static __init unsigned long
+mt7620_get_xtal_rate(void)
+{
+ u32 reg;
+
+ reg = rt_sysc_r32(SYSC_REG_SYSTEM_CONFIG0);
+ if (reg & SYSCFG0_XTAL_FREQ_SEL)
+ return MHZ(40);
+
+ return MHZ(20);
+}
+
+static __init unsigned long
+mt7620_get_periph_rate(unsigned long xtal_rate)
+{
+ u32 reg;
+
+ reg = rt_sysc_r32(SYSC_REG_CLKCFG0);
+ if (reg & CLKCFG0_PERI_CLK_SEL)
+ return xtal_rate;
+
+ return MHZ(40);
+}
+
+static const u32 mt7620_clk_divider[] __initconst = { 2, 3, 4, 8 };
+
+static __init unsigned long
+mt7620_get_cpu_pll_rate(unsigned long xtal_rate)
+{
+ u32 reg;
+ u32 mul;
+ u32 div;
+
+ reg = rt_sysc_r32(SYSC_REG_CPLL_CONFIG0);
+ if (reg & CPLL_CFG0_BYPASS_REF_CLK)
+ return xtal_rate;
+
+ if ((reg & CPLL_CFG0_SW_CFG) == 0)
+ return MHZ(600);
+
+ mul = (reg >> CPLL_CFG0_PLL_MULT_RATIO_SHIFT) &
+ CPLL_CFG0_PLL_MULT_RATIO_MASK;
+ mul += 24;
+ if (reg & CPLL_CFG0_LC_CURFCK)
+ mul *= 2;
+
+ div = (reg >> CPLL_CFG0_PLL_DIV_RATIO_SHIFT) &
+ CPLL_CFG0_PLL_DIV_RATIO_MASK;
+
+ WARN_ON(div >= ARRAY_SIZE(mt7620_clk_divider));
+
+ return mt7620_calc_rate(xtal_rate, mul, mt7620_clk_divider[div]);
+}
+
+static __init unsigned long
+mt7620_get_pll_rate(unsigned long xtal_rate, unsigned long cpu_pll_rate)
+{
+ u32 reg;
+
+ reg = rt_sysc_r32(SYSC_REG_CPLL_CONFIG1);
+ if (reg & CPLL_CFG1_CPU_AUX1)
+ return xtal_rate;
+
+ if (reg & CPLL_CFG1_CPU_AUX0)
+ return MHZ(480);
+
+ return cpu_pll_rate;
+}
+
+static __init unsigned long
+mt7620_get_cpu_rate(unsigned long pll_rate)
+{
+ u32 reg;
+ u32 mul;
+ u32 div;
+
+ reg = rt_sysc_r32(SYSC_REG_CPU_SYS_CLKCFG);
+
+ mul = reg & CPU_SYS_CLKCFG_CPU_FFRAC_MASK;
+ div = (reg >> CPU_SYS_CLKCFG_CPU_FDIV_SHIFT) &
+ CPU_SYS_CLKCFG_CPU_FDIV_MASK;
+
+ return mt7620_calc_rate(pll_rate, mul, div);
+}
+
+static const u32 mt7620_ocp_dividers[16] __initconst = {
+ [CPU_SYS_CLKCFG_OCP_RATIO_2] = 2,
+ [CPU_SYS_CLKCFG_OCP_RATIO_3] = 3,
+ [CPU_SYS_CLKCFG_OCP_RATIO_4] = 4,
+ [CPU_SYS_CLKCFG_OCP_RATIO_5] = 5,
+ [CPU_SYS_CLKCFG_OCP_RATIO_10] = 10,
+};
+
+static __init unsigned long
+mt7620_get_dram_rate(unsigned long pll_rate)
+{
+ if (dram_type == SYSCFG0_DRAM_TYPE_SDRAM)
+ return pll_rate / 4;
+
+ return pll_rate / 3;
+}
+
+static __init unsigned long
+mt7620_get_sys_rate(unsigned long cpu_rate)
+{
+ u32 reg;
+ u32 ocp_ratio;
+ u32 div;
+
+ reg = rt_sysc_r32(SYSC_REG_CPU_SYS_CLKCFG);
+
+ ocp_ratio = (reg >> CPU_SYS_CLKCFG_OCP_RATIO_SHIFT) &
+ CPU_SYS_CLKCFG_OCP_RATIO_MASK;
+
+ if (WARN_ON(ocp_ratio >= ARRAY_SIZE(mt7620_ocp_dividers)))
+ return cpu_rate;
+
+ div = mt7620_ocp_dividers[ocp_ratio];
+ if (WARN(!div, "invalid divider for OCP ratio %u", ocp_ratio))
+ return cpu_rate;
+
+ return cpu_rate / div;
+}
+
+void __init ralink_clk_init(void)
+{
+ unsigned long xtal_rate;
+ unsigned long cpu_pll_rate;
+ unsigned long pll_rate;
+ unsigned long cpu_rate;
+ unsigned long sys_rate;
+ unsigned long dram_rate;
+ unsigned long periph_rate;
+
+ xtal_rate = mt7620_get_xtal_rate();
+
+#define RFMT(label) label ":%lu.%03luMHz "
+#define RINT(x) ((x) / 1000000)
+#define RFRAC(x) (((x) / 1000) % 1000)
+
+ 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
+
+ ralink_clk_add("cpu", cpu_rate);
+ ralink_clk_add("10000100.timer", periph_rate);
+ ralink_clk_add("10000120.watchdog", periph_rate);
+ ralink_clk_add("10000b00.spi", sys_rate);
+ ralink_clk_add("10000c00.uartlite", periph_rate);
+ ralink_clk_add("10180000.wmac", xtal_rate);
+}
+
+void __init ralink_of_remap(void)
+{
+ rt_sysc_membase = plat_of_remap_node("ralink,mt7620a-sysc");
+ rt_memc_membase = plat_of_remap_node("ralink,mt7620a-memc");
+
+ if (!rt_sysc_membase || !rt_memc_membase)
+ 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);
+ unsigned char *name = NULL;
+ u32 n0;
+ u32 n1;
+ u32 rev;
+ u32 cfg0;
+ u32 pmu0;
+ u32 pmu1;
+ u32 bga;
+
+ n0 = __raw_readl(sysc + SYSC_REG_CHIP_NAME0);
+ n1 = __raw_readl(sysc + SYSC_REG_CHIP_NAME1);
+ 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) {
+ 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");
+#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,
+ "Ralink %s ver:%u eco:%u",
+ name,
+ (rev >> CHIP_REV_VER_SHIFT) & CHIP_REV_VER_MASK,
+ (rev & CHIP_REV_ECO_MASK));
+
+ cfg0 = __raw_readl(sysc + SYSC_REG_SYSTEM_CONFIG0);
+ dram_type = (cfg0 >> SYSCFG0_DRAM_TYPE_SHIFT) & SYSCFG0_DRAM_TYPE_MASK;
+
+ 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);
+
+ pr_info("Analog PMU set to %s control\n",
+ (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;
+}