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openwrt/target/linux/ar71xx/patches-3.10/707-MIPS-ath79-add-support-for-QCA953x-SoC.patch
Felix Fietkau f80f0c7d22 ar71xx: add support for QCA953x SoC 
I don't have access to the specs, so I'm not sure about every detail, but I
haven't seen any problems with my test system, a TL-WR841N v9. It looks pretty
much like a QCA955x without PCI, a little twist in the clock calculation and
a AR9331-compatible switch.

Features not yet supported:

* EHCI (my test system doesn't have USB)
* ? (I have no idea if the QCA953x has any other features I don't know about
that aren't used by the TL-WR841N v9)

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>

SVN-Revision: 40399
2014-04-07 07:59:45 +00:00

407 lines
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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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