From 5300a7cd7ed2f88488ddba62947b9c6bb9663777 Mon Sep 17 00:00:00 2001 Message-Id: <5300a7cd7ed2f88488ddba62947b9c6bb9663777.1396122227.git.mschiffer@universe-factory.net> From: Matthias Schiffer Date: Sat, 29 Mar 2014 20:26:08 +0100 Subject: [PATCH 1/2] MIPS: ath79: add support for QCA953x SoC Note that the clock calculation looks very similar to the QCA955x, but the meaning of the bits CPUCLK_FROM_CPUPLL and DDRCLK_FROM_DDRPLL is reversed. --- arch/mips/ath79/Kconfig | 6 +- arch/mips/ath79/clock.c | 78 ++++++++++++++++++++++++++ arch/mips/ath79/common.c | 4 ++ arch/mips/ath79/dev-common.c | 1 + arch/mips/ath79/dev-wmac.c | 20 +++++++ arch/mips/ath79/early_printk.c | 1 + arch/mips/ath79/gpio.c | 4 +- arch/mips/ath79/irq.c | 4 ++ arch/mips/ath79/setup.c | 8 ++- arch/mips/include/asm/mach-ath79/ar71xx_regs.h | 48 ++++++++++++++++ arch/mips/include/asm/mach-ath79/ath79.h | 11 ++++ 11 files changed, 182 insertions(+), 3 deletions(-) --- a/arch/mips/ath79/Kconfig +++ b/arch/mips/ath79/Kconfig @@ -1158,6 +1158,10 @@ config SOC_AR934X select PCI_AR724X if PCI def_bool n +config SOC_QCA953X + select USB_ARCH_HAS_EHCI + def_bool n + config SOC_QCA955X select HW_HAS_PCI select PCI_AR724X if PCI @@ -1200,7 +1204,7 @@ config ATH79_DEV_USB def_bool n config ATH79_DEV_WMAC - depends on (SOC_AR913X || SOC_AR933X || SOC_AR934X || SOC_QCA955X) + depends on (SOC_AR913X || SOC_AR933X || SOC_AR934X || SOC_QCA953X || SOC_QCA955X) def_bool n config ATH79_NVRAM --- a/arch/mips/ath79/clock.c +++ b/arch/mips/ath79/clock.c @@ -350,6 +350,91 @@ static void __init ar934x_clocks_init(vo iounmap(dpll_base); } +static void __init qca953x_clocks_init(void) +{ + unsigned long ref_rate; + unsigned long cpu_rate; + unsigned long ddr_rate; + unsigned long ahb_rate; + u32 pll, out_div, ref_div, nint, frac, clk_ctrl, postdiv; + u32 cpu_pll, ddr_pll; + u32 bootstrap; + + bootstrap = ath79_reset_rr(QCA953X_RESET_REG_BOOTSTRAP); + if (bootstrap & QCA953X_BOOTSTRAP_REF_CLK_40) + ref_rate = 40 * 1000 * 1000; + else + ref_rate = 25 * 1000 * 1000; + + pll = ath79_pll_rr(QCA953X_PLL_CPU_CONFIG_REG); + out_div = (pll >> QCA953X_PLL_CPU_CONFIG_OUTDIV_SHIFT) & + QCA953X_PLL_CPU_CONFIG_OUTDIV_MASK; + ref_div = (pll >> QCA953X_PLL_CPU_CONFIG_REFDIV_SHIFT) & + QCA953X_PLL_CPU_CONFIG_REFDIV_MASK; + nint = (pll >> QCA953X_PLL_CPU_CONFIG_NINT_SHIFT) & + QCA953X_PLL_CPU_CONFIG_NINT_MASK; + frac = (pll >> QCA953X_PLL_CPU_CONFIG_NFRAC_SHIFT) & + QCA953X_PLL_CPU_CONFIG_NFRAC_MASK; + + cpu_pll = nint * ref_rate / ref_div; + cpu_pll += frac * (ref_rate >> 6) / ref_div; + cpu_pll /= (1 << out_div); + + pll = ath79_pll_rr(QCA953X_PLL_DDR_CONFIG_REG); + out_div = (pll >> QCA953X_PLL_DDR_CONFIG_OUTDIV_SHIFT) & + QCA953X_PLL_DDR_CONFIG_OUTDIV_MASK; + ref_div = (pll >> QCA953X_PLL_DDR_CONFIG_REFDIV_SHIFT) & + QCA953X_PLL_DDR_CONFIG_REFDIV_MASK; + nint = (pll >> QCA953X_PLL_DDR_CONFIG_NINT_SHIFT) & + QCA953X_PLL_DDR_CONFIG_NINT_MASK; + frac = (pll >> QCA953X_PLL_DDR_CONFIG_NFRAC_SHIFT) & + QCA953X_PLL_DDR_CONFIG_NFRAC_MASK; + + ddr_pll = nint * ref_rate / ref_div; + ddr_pll += frac * (ref_rate >> 6) / (ref_div << 4); + ddr_pll /= (1 << out_div); + + clk_ctrl = ath79_pll_rr(QCA953X_PLL_CLK_CTRL_REG); + + postdiv = (clk_ctrl >> QCA953X_PLL_CLK_CTRL_CPU_POST_DIV_SHIFT) & + QCA953X_PLL_CLK_CTRL_CPU_POST_DIV_MASK; + + if (clk_ctrl & QCA953X_PLL_CLK_CTRL_CPU_PLL_BYPASS) + cpu_rate = ref_rate; + else if (clk_ctrl & QCA953X_PLL_CLK_CTRL_CPUCLK_FROM_CPUPLL) + cpu_rate = cpu_pll / (postdiv + 1); + else + cpu_rate = ddr_pll / (postdiv + 1); + + postdiv = (clk_ctrl >> QCA953X_PLL_CLK_CTRL_DDR_POST_DIV_SHIFT) & + QCA953X_PLL_CLK_CTRL_DDR_POST_DIV_MASK; + + if (clk_ctrl & QCA953X_PLL_CLK_CTRL_DDR_PLL_BYPASS) + ddr_rate = ref_rate; + else if (clk_ctrl & QCA953X_PLL_CLK_CTRL_DDRCLK_FROM_DDRPLL) + ddr_rate = ddr_pll / (postdiv + 1); + else + ddr_rate = cpu_pll / (postdiv + 1); + + postdiv = (clk_ctrl >> QCA953X_PLL_CLK_CTRL_AHB_POST_DIV_SHIFT) & + QCA953X_PLL_CLK_CTRL_AHB_POST_DIV_MASK; + + if (clk_ctrl & QCA953X_PLL_CLK_CTRL_AHB_PLL_BYPASS) + ahb_rate = ref_rate; + else if (clk_ctrl & QCA953X_PLL_CLK_CTRL_AHBCLK_FROM_DDRPLL) + ahb_rate = ddr_pll / (postdiv + 1); + else + ahb_rate = cpu_pll / (postdiv + 1); + + ath79_add_sys_clkdev("ref", ref_rate); + ath79_add_sys_clkdev("cpu", cpu_rate); + ath79_add_sys_clkdev("ddr", ddr_rate); + ath79_add_sys_clkdev("ahb", ahb_rate); + + clk_add_alias("wdt", NULL, "ref", NULL); + clk_add_alias("uart", NULL, "ref", NULL); +} + static void __init qca955x_clocks_init(void) { unsigned long ref_rate; @@ -447,6 +532,8 @@ void __init ath79_clocks_init(void) ar933x_clocks_init(); else if (soc_is_ar934x()) ar934x_clocks_init(); + else if (soc_is_qca953x()) + qca953x_clocks_init(); else if (soc_is_qca955x()) qca955x_clocks_init(); else --- a/arch/mips/ath79/common.c +++ b/arch/mips/ath79/common.c @@ -73,6 +73,8 @@ void ath79_device_reset_set(u32 mask) reg = AR933X_RESET_REG_RESET_MODULE; else if (soc_is_ar934x()) reg = AR934X_RESET_REG_RESET_MODULE; + else if (soc_is_qca953x()) + reg = QCA953X_RESET_REG_RESET_MODULE; else if (soc_is_qca955x()) reg = QCA955X_RESET_REG_RESET_MODULE; else @@ -101,6 +103,8 @@ void ath79_device_reset_clear(u32 mask) reg = AR933X_RESET_REG_RESET_MODULE; else if (soc_is_ar934x()) reg = AR934X_RESET_REG_RESET_MODULE; + else if (soc_is_qca953x()) + reg = QCA953X_RESET_REG_RESET_MODULE; else if (soc_is_qca955x()) reg = QCA955X_RESET_REG_RESET_MODULE; else --- a/arch/mips/ath79/dev-common.c +++ b/arch/mips/ath79/dev-common.c @@ -93,6 +93,7 @@ void __init ath79_register_uart(void) soc_is_ar724x() || soc_is_ar913x() || soc_is_ar934x() || + soc_is_qca953x() || soc_is_qca955x()) { ath79_uart_data[0].uartclk = uart_clk_rate; platform_device_register(&ath79_uart_device); --- a/arch/mips/ath79/dev-wmac.c +++ b/arch/mips/ath79/dev-wmac.c @@ -101,7 +101,7 @@ static int ar933x_wmac_reset(void) return -ETIMEDOUT; } -static int ar933x_r1_get_wmac_revision(void) +static int ar93xx_get_soc_revision(void) { return ath79_soc_rev; } @@ -126,7 +126,7 @@ static void __init ar933x_wmac_setup(voi ath79_wmac_data.is_clk_25mhz = true; if (ath79_soc_rev == 1) - ath79_wmac_data.get_mac_revision = ar933x_r1_get_wmac_revision; + ath79_wmac_data.get_mac_revision = ar93xx_get_soc_revision; ath79_wmac_data.external_reset = ar933x_wmac_reset; } @@ -149,6 +149,26 @@ static void ar934x_wmac_setup(void) ath79_wmac_data.is_clk_25mhz = true; } +static void qca953x_wmac_setup(void) +{ + u32 t; + + ath79_wmac_device.name = "qca953x_wmac"; + + ath79_wmac_resources[0].start = QCA953X_WMAC_BASE; + ath79_wmac_resources[0].end = QCA953X_WMAC_BASE + QCA953X_WMAC_SIZE - 1; + ath79_wmac_resources[1].start = ATH79_CPU_IRQ(2); + ath79_wmac_resources[1].end = ATH79_CPU_IRQ(2); + + t = ath79_reset_rr(QCA953X_RESET_REG_BOOTSTRAP); + if (t & QCA953X_BOOTSTRAP_REF_CLK_40) + ath79_wmac_data.is_clk_25mhz = false; + else + ath79_wmac_data.is_clk_25mhz = true; + + ath79_wmac_data.get_mac_revision = ar93xx_get_soc_revision; +} + static void qca955x_wmac_setup(void) { u32 t; @@ -366,6 +386,8 @@ void __init ath79_register_wmac(u8 *cal_ ar933x_wmac_setup(); else if (soc_is_ar934x()) ar934x_wmac_setup(); + else if (soc_is_qca953x()) + qca953x_wmac_setup(); else if (soc_is_qca955x()) qca955x_wmac_setup(); else --- a/arch/mips/ath79/early_printk.c +++ b/arch/mips/ath79/early_printk.c @@ -114,6 +114,7 @@ static void prom_putchar_init(void) case REV_ID_MAJOR_AR9341: case REV_ID_MAJOR_AR9342: case REV_ID_MAJOR_AR9344: + case REV_ID_MAJOR_QCA9533: case REV_ID_MAJOR_QCA9556: case REV_ID_MAJOR_QCA9558: _prom_putchar = prom_putchar_ar71xx; --- a/arch/mips/ath79/gpio.c +++ b/arch/mips/ath79/gpio.c @@ -224,6 +224,8 @@ void __init ath79_gpio_init(void) ath79_gpio_count = AR933X_GPIO_COUNT; else if (soc_is_ar934x()) ath79_gpio_count = AR934X_GPIO_COUNT; + else if (soc_is_qca953x()) + ath79_gpio_count = QCA953X_GPIO_COUNT; else if (soc_is_qca955x()) ath79_gpio_count = QCA955X_GPIO_COUNT; else @@ -231,7 +233,7 @@ void __init ath79_gpio_init(void) ath79_gpio_base = ioremap_nocache(AR71XX_GPIO_BASE, AR71XX_GPIO_SIZE); ath79_gpio_chip.ngpio = ath79_gpio_count; - if (soc_is_ar934x() || soc_is_qca955x()) { + if (soc_is_ar934x() || soc_is_qca953x() || soc_is_qca955x()) { ath79_gpio_chip.direction_input = ar934x_gpio_direction_input; ath79_gpio_chip.direction_output = ar934x_gpio_direction_output; } --- a/arch/mips/ath79/irq.c +++ b/arch/mips/ath79/irq.c @@ -106,6 +106,7 @@ static void __init ath79_misc_irq_init(v else if (soc_is_ar724x() || soc_is_ar933x() || soc_is_ar934x() || + soc_is_qca953x() || soc_is_qca955x()) ath79_misc_irq_chip.irq_ack = ar724x_misc_irq_ack; else @@ -352,6 +353,9 @@ void __init arch_init_irq(void) } else if (soc_is_ar934x()) { ath79_ip2_handler = ath79_default_ip2_handler; ath79_ip3_handler = ar934x_ip3_handler; + } else if (soc_is_qca953x()) { + ath79_ip2_handler = ath79_default_ip2_handler; + ath79_ip3_handler = ath79_default_ip3_handler; } else if (soc_is_qca955x()) { ath79_ip2_handler = ath79_default_ip2_handler; ath79_ip3_handler = ath79_default_ip3_handler; --- a/arch/mips/ath79/setup.c +++ b/arch/mips/ath79/setup.c @@ -151,6 +151,12 @@ static void __init ath79_detect_sys_type rev = id & AR934X_REV_ID_REVISION_MASK; break; + case REV_ID_MAJOR_QCA9533: + ath79_soc = ATH79_SOC_QCA9533; + chip = "9533"; + rev = id & QCA953X_REV_ID_REVISION_MASK; + break; + case REV_ID_MAJOR_QCA9556: ath79_soc = ATH79_SOC_QCA9556; chip = "9556"; @@ -169,7 +175,7 @@ static void __init ath79_detect_sys_type ath79_soc_rev = rev; - if (soc_is_qca955x()) + if (soc_is_qca953x() || soc_is_qca955x()) sprintf(ath79_sys_type, "Qualcomm Atheros QCA%s rev %u", chip, rev); else --- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h +++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h @@ -105,6 +105,9 @@ #define AR934X_SRIF_BASE (AR71XX_APB_BASE + 0x00116000) #define AR934X_SRIF_SIZE 0x1000 +#define QCA953X_WMAC_BASE (AR71XX_APB_BASE + 0x00100000) +#define QCA953X_WMAC_SIZE 0x20000 + #define QCA955X_PCI_MEM_BASE0 0x10000000 #define QCA955X_PCI_MEM_BASE1 0x12000000 #define QCA955X_PCI_MEM_SIZE 0x02000000 @@ -279,6 +282,43 @@ #define AR934X_PLL_SWITCH_CLOCK_CONTROL_MDIO_CLK_SEL BIT(6) +#define QCA953X_PLL_CPU_CONFIG_REG 0x00 +#define QCA953X_PLL_DDR_CONFIG_REG 0x04 +#define QCA953X_PLL_CLK_CTRL_REG 0x08 +#define QCA953X_PLL_ETH_XMII_CONTROL_REG 0x2c +#define QCA953X_PLL_ETH_SGMII_CONTROL_REG 0x48 + +#define QCA953X_PLL_CPU_CONFIG_NFRAC_SHIFT 0 +#define QCA953X_PLL_CPU_CONFIG_NFRAC_MASK 0x3f +#define QCA953X_PLL_CPU_CONFIG_NINT_SHIFT 6 +#define QCA953X_PLL_CPU_CONFIG_NINT_MASK 0x3f +#define QCA953X_PLL_CPU_CONFIG_REFDIV_SHIFT 12 +#define QCA953X_PLL_CPU_CONFIG_REFDIV_MASK 0x1f +#define QCA953X_PLL_CPU_CONFIG_OUTDIV_SHIFT 19 +#define QCA953X_PLL_CPU_CONFIG_OUTDIV_MASK 0x3 + +#define QCA953X_PLL_DDR_CONFIG_NFRAC_SHIFT 0 +#define QCA953X_PLL_DDR_CONFIG_NFRAC_MASK 0x3ff +#define QCA953X_PLL_DDR_CONFIG_NINT_SHIFT 10 +#define QCA953X_PLL_DDR_CONFIG_NINT_MASK 0x3f +#define QCA953X_PLL_DDR_CONFIG_REFDIV_SHIFT 16 +#define QCA953X_PLL_DDR_CONFIG_REFDIV_MASK 0x1f +#define QCA953X_PLL_DDR_CONFIG_OUTDIV_SHIFT 23 +#define QCA953X_PLL_DDR_CONFIG_OUTDIV_MASK 0x7 + +#define QCA953X_PLL_CLK_CTRL_CPU_PLL_BYPASS BIT(2) +#define QCA953X_PLL_CLK_CTRL_DDR_PLL_BYPASS BIT(3) +#define QCA953X_PLL_CLK_CTRL_AHB_PLL_BYPASS BIT(4) +#define QCA953X_PLL_CLK_CTRL_CPU_POST_DIV_SHIFT 5 +#define QCA953X_PLL_CLK_CTRL_CPU_POST_DIV_MASK 0x1f +#define QCA953X_PLL_CLK_CTRL_DDR_POST_DIV_SHIFT 10 +#define QCA953X_PLL_CLK_CTRL_DDR_POST_DIV_MASK 0x1f +#define QCA953X_PLL_CLK_CTRL_AHB_POST_DIV_SHIFT 15 +#define QCA953X_PLL_CLK_CTRL_AHB_POST_DIV_MASK 0x1f +#define QCA953X_PLL_CLK_CTRL_CPUCLK_FROM_CPUPLL BIT(20) +#define QCA953X_PLL_CLK_CTRL_DDRCLK_FROM_DDRPLL BIT(21) +#define QCA953X_PLL_CLK_CTRL_AHBCLK_FROM_DDRPLL BIT(24) + #define QCA955X_PLL_CPU_CONFIG_REG 0x00 #define QCA955X_PLL_DDR_CONFIG_REG 0x04 #define QCA955X_PLL_CLK_CTRL_REG 0x08 @@ -355,6 +395,10 @@ #define AR934X_RESET_REG_BOOTSTRAP 0xb0 #define AR934X_RESET_REG_PCIE_WMAC_INT_STATUS 0xac +#define QCA953X_RESET_REG_RESET_MODULE 0x1c +#define QCA953X_RESET_REG_BOOTSTRAP 0xb0 +#define QCA953X_RESET_REG_EXT_INT_STATUS 0xac + #define QCA955X_RESET_REG_RESET_MODULE 0x1c #define QCA955X_RESET_REG_BOOTSTRAP 0xb0 #define QCA955X_RESET_REG_EXT_INT_STATUS 0xac @@ -503,6 +547,8 @@ #define AR934X_BOOTSTRAP_SDRAM_DISABLED BIT(1) #define AR934X_BOOTSTRAP_DDR1 BIT(0) +#define QCA953X_BOOTSTRAP_REF_CLK_40 BIT(4) + #define QCA955X_BOOTSTRAP_REF_CLK_40 BIT(4) #define AR934X_PCIE_WMAC_INT_WMAC_MISC BIT(0) @@ -565,6 +611,7 @@ #define REV_ID_MAJOR_AR9341 0x0120 #define REV_ID_MAJOR_AR9342 0x1120 #define REV_ID_MAJOR_AR9344 0x2120 +#define REV_ID_MAJOR_QCA9533 0x0140 #define REV_ID_MAJOR_QCA9556 0x0130 #define REV_ID_MAJOR_QCA9558 0x1130 @@ -587,6 +634,8 @@ #define AR934X_REV_ID_REVISION_MASK 0xf +#define QCA953X_REV_ID_REVISION_MASK 0xf + #define QCA955X_REV_ID_REVISION_MASK 0xf /* @@ -640,6 +689,7 @@ #define AR913X_GPIO_COUNT 22 #define AR933X_GPIO_COUNT 30 #define AR934X_GPIO_COUNT 23 +#define QCA953X_GPIO_COUNT 24 #define QCA955X_GPIO_COUNT 24 /* --- a/arch/mips/include/asm/mach-ath79/ath79.h +++ b/arch/mips/include/asm/mach-ath79/ath79.h @@ -32,6 +32,7 @@ enum ath79_soc_type { ATH79_SOC_AR9341, ATH79_SOC_AR9342, ATH79_SOC_AR9344, + ATH79_SOC_QCA9533, ATH79_SOC_QCA9556, ATH79_SOC_QCA9558, }; @@ -100,6 +101,16 @@ static inline int soc_is_ar934x(void) return soc_is_ar9341() || soc_is_ar9342() || soc_is_ar9344(); } +static inline int soc_is_qca9533(void) +{ + return ath79_soc == ATH79_SOC_QCA9533; +} + +static inline int soc_is_qca953x(void) +{ + return soc_is_qca9533(); +} + static inline int soc_is_qca9556(void) { return ath79_soc == ATH79_SOC_QCA9556;