--- /dev/null
+From 5300a7cd7ed2f88488ddba62947b9c6bb9663777 Mon Sep 17 00:00:00 2001
+Message-Id: <5300a7cd7ed2f88488ddba62947b9c6bb9663777.1396122227.git.mschiffer@universe-factory.net>
+From: Matthias Schiffer <mschiffer@universe-factory.net>
+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
+@@ -929,6 +929,10 @@ 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 USB_ARCH_HAS_EHCI
+ select HW_HAS_PCI
+@@ -972,7 +976,7 @@ 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
+@@ -295,6 +295,82 @@ static void __init ar934x_clocks_init(vo
+ iounmap(dpll_base);
+ }
+
++static void __init qca953x_clocks_init(void)
++{
++ 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)
++ ath79_ref_clk.rate = 40 * 1000 * 1000;
++ else
++ ath79_ref_clk.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 * ath79_ref_clk.rate / ref_div;
++ cpu_pll += frac * (ath79_ref_clk.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 * ath79_ref_clk.rate / ref_div;
++ ddr_pll += frac * (ath79_ref_clk.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)
++ ath79_cpu_clk.rate = ath79_ref_clk.rate;
++ else if (clk_ctrl & QCA953X_PLL_CLK_CTRL_CPUCLK_FROM_CPUPLL)
++ ath79_cpu_clk.rate = cpu_pll / (postdiv + 1);
++ else
++ ath79_cpu_clk.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)
++ ath79_ddr_clk.rate = ath79_ref_clk.rate;
++ else if (clk_ctrl & QCA953X_PLL_CLK_CTRL_DDRCLK_FROM_DDRPLL)
++ ath79_ddr_clk.rate = ddr_pll / (postdiv + 1);
++ else
++ ath79_ddr_clk.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)
++ ath79_ahb_clk.rate = ath79_ref_clk.rate;
++ else if (clk_ctrl & QCA953X_PLL_CLK_CTRL_AHBCLK_FROM_DDRPLL)
++ ath79_ahb_clk.rate = ddr_pll / (postdiv + 1);
++ else
++ ath79_ahb_clk.rate = cpu_pll / (postdiv + 1);
++
++ ath79_wdt_clk.rate = ath79_ref_clk.rate;
++ ath79_uart_clk.rate = ath79_ref_clk.rate;
++}
++
+ static void __init qca955x_clocks_init(void)
+ {
+ u32 pll, out_div, ref_div, nint, frac, clk_ctrl, postdiv;
+@@ -383,6 +459,8 @@ 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
+@@ -100,6 +100,7 @@ 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 = clk_get_rate(clk);
+ platform_device_register(&ath79_uart_device);
+--- a/arch/mips/ath79/dev-wmac.c
++++ b/arch/mips/ath79/dev-wmac.c
+@@ -149,6 +149,24 @@ 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;
++}
++
+ static void qca955x_wmac_setup(void)
+ {
+ u32 t;
+@@ -366,6 +384,8 @@ 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
+@@ -106,6 +106,9 @@
+ #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
+@@ -280,6 +283,43 @@
+
+ #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
+@@ -356,6 +396,10 @@
+ #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
+@@ -504,6 +548,8 @@
+ #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)
+@@ -566,6 +612,7 @@
+ #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
+
+@@ -588,6 +635,8 @@
+
+ #define AR934X_REV_ID_REVISION_MASK 0xf
+
++#define QCA953X_REV_ID_REVISION_MASK 0xf
++
+ #define QCA955X_REV_ID_REVISION_MASK 0xf
+
+ /*
+@@ -641,6 +690,7 @@
+ #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;
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