diff options
Diffstat (limited to 'target/linux/ar71xx/patches-3.2/007-MIPS-ath79-add-AR933X-specific-clock-init.patch')
| -rw-r--r-- | target/linux/ar71xx/patches-3.2/007-MIPS-ath79-add-AR933X-specific-clock-init.patch | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.2/007-MIPS-ath79-add-AR933X-specific-clock-init.patch b/target/linux/ar71xx/patches-3.2/007-MIPS-ath79-add-AR933X-specific-clock-init.patch new file mode 100644 index 0000000000..0572fcd742 --- /dev/null +++ b/target/linux/ar71xx/patches-3.2/007-MIPS-ath79-add-AR933X-specific-clock-init.patch @@ -0,0 +1,148 @@ +From 29c8b2eef2011bf9392479487a51f6927892bfd6 Mon Sep 17 00:00:00 2001 +From: Gabor Juhos <juhosg@openwrt.org> +Date: Mon, 20 Jun 2011 21:26:04 +0200 +Subject: [PATCH 07/27] MIPS: ath79: add AR933X specific clock init + +Signed-off-by: Gabor Juhos <juhosg@openwrt.org> +Cc: linux-mips@linux-mips.org +Cc: Kathy Giori <kgiori@qca.qualcomm.com> +Cc: "Luis R. Rodriguez" <rodrigue@qca.qualcomm.com> +Patchwork: https://patchwork.linux-mips.org/patch/2522/ +Signed-off-by: Ralf Baechle <ralf@linux-mips.org> +--- + arch/mips/ath79/clock.c | 55 ++++++++++++++++++++++++ + arch/mips/include/asm/mach-ath79/ar71xx_regs.h | 22 +++++++++ + arch/mips/include/asm/mach-ath79/ath79.h | 6 +++ + 3 files changed, 83 insertions(+), 0 deletions(-) + +--- a/arch/mips/ath79/clock.c ++++ b/arch/mips/ath79/clock.c +@@ -110,6 +110,59 @@ static void __init ar913x_clocks_init(vo + ath79_uart_clk.rate = ath79_ahb_clk.rate; + } + ++static void __init ar933x_clocks_init(void) ++{ ++ u32 clock_ctrl; ++ u32 cpu_config; ++ u32 freq; ++ u32 t; ++ ++ t = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP); ++ if (t & AR933X_BOOTSTRAP_REF_CLK_40) ++ ath79_ref_clk.rate = (40 * 1000 * 1000); ++ else ++ ath79_ref_clk.rate = (25 * 1000 * 1000); ++ ++ clock_ctrl = ath79_pll_rr(AR933X_PLL_CLOCK_CTRL_REG); ++ if (clock_ctrl & AR933X_PLL_CLOCK_CTRL_BYPASS) { ++ ath79_cpu_clk.rate = ath79_ref_clk.rate; ++ ath79_ahb_clk.rate = ath79_ref_clk.rate; ++ ath79_ddr_clk.rate = ath79_ref_clk.rate; ++ } else { ++ cpu_config = ath79_pll_rr(AR933X_PLL_CPU_CONFIG_REG); ++ ++ t = (cpu_config >> AR933X_PLL_CPU_CONFIG_REFDIV_SHIFT) & ++ AR933X_PLL_CPU_CONFIG_REFDIV_MASK; ++ freq = ath79_ref_clk.rate / t; ++ ++ t = (cpu_config >> AR933X_PLL_CPU_CONFIG_NINT_SHIFT) & ++ AR933X_PLL_CPU_CONFIG_NINT_MASK; ++ freq *= t; ++ ++ t = (cpu_config >> AR933X_PLL_CPU_CONFIG_OUTDIV_SHIFT) & ++ AR933X_PLL_CPU_CONFIG_OUTDIV_MASK; ++ if (t == 0) ++ t = 1; ++ ++ freq >>= t; ++ ++ t = ((clock_ctrl >> AR933X_PLL_CLOCK_CTRL_CPU_DIV_SHIFT) & ++ AR933X_PLL_CLOCK_CTRL_CPU_DIV_MASK) + 1; ++ ath79_cpu_clk.rate = freq / t; ++ ++ t = ((clock_ctrl >> AR933X_PLL_CLOCK_CTRL_DDR_DIV_SHIFT) & ++ AR933X_PLL_CLOCK_CTRL_DDR_DIV_MASK) + 1; ++ ath79_ddr_clk.rate = freq / t; ++ ++ t = ((clock_ctrl >> AR933X_PLL_CLOCK_CTRL_AHB_DIV_SHIFT) & ++ AR933X_PLL_CLOCK_CTRL_AHB_DIV_MASK) + 1; ++ ath79_ahb_clk.rate = freq / t; ++ } ++ ++ ath79_wdt_clk.rate = ath79_ref_clk.rate; ++ ath79_uart_clk.rate = ath79_ref_clk.rate; ++} ++ + void __init ath79_clocks_init(void) + { + if (soc_is_ar71xx()) +@@ -118,6 +171,8 @@ void __init ath79_clocks_init(void) + ar724x_clocks_init(); + else if (soc_is_ar913x()) + ar913x_clocks_init(); ++ else if (soc_is_ar933x()) ++ ar933x_clocks_init(); + else + BUG(); + +--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h ++++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h +@@ -123,6 +123,24 @@ + #define AR913X_AHB_DIV_SHIFT 19 + #define AR913X_AHB_DIV_MASK 0x1 + ++#define AR933X_PLL_CPU_CONFIG_REG 0x00 ++#define AR933X_PLL_CLOCK_CTRL_REG 0x08 ++ ++#define AR933X_PLL_CPU_CONFIG_NINT_SHIFT 10 ++#define AR933X_PLL_CPU_CONFIG_NINT_MASK 0x3f ++#define AR933X_PLL_CPU_CONFIG_REFDIV_SHIFT 16 ++#define AR933X_PLL_CPU_CONFIG_REFDIV_MASK 0x1f ++#define AR933X_PLL_CPU_CONFIG_OUTDIV_SHIFT 23 ++#define AR933X_PLL_CPU_CONFIG_OUTDIV_MASK 0x7 ++ ++#define AR933X_PLL_CLOCK_CTRL_BYPASS BIT(2) ++#define AR933X_PLL_CLOCK_CTRL_CPU_DIV_SHIFT 5 ++#define AR933X_PLL_CLOCK_CTRL_CPU_DIV_MASK 0x3 ++#define AR933X_PLL_CLOCK_CTRL_DDR_DIV_SHIFT 10 ++#define AR933X_PLL_CLOCK_CTRL_DDR_DIV_MASK 0x3 ++#define AR933X_PLL_CLOCK_CTRL_AHB_DIV_SHIFT 15 ++#define AR933X_PLL_CLOCK_CTRL_AHB_DIV_MASK 0x7 ++ + /* + * USB_CONFIG block + */ +@@ -155,6 +173,8 @@ + + #define AR724X_RESET_REG_RESET_MODULE 0x1c + ++#define AR933X_RESET_REG_BOOTSTRAP 0xac ++ + #define MISC_INT_ETHSW BIT(12) + #define MISC_INT_TIMER4 BIT(10) + #define MISC_INT_TIMER3 BIT(9) +@@ -204,6 +224,8 @@ + #define AR913X_RESET_USB_HOST BIT(5) + #define AR913X_RESET_USB_PHY BIT(4) + ++#define AR933X_BOOTSTRAP_REF_CLK_40 BIT(0) ++ + #define REV_ID_MAJOR_MASK 0xfff0 + #define REV_ID_MAJOR_AR71XX 0x00a0 + #define REV_ID_MAJOR_AR913X 0x00b0 +--- a/arch/mips/include/asm/mach-ath79/ath79.h ++++ b/arch/mips/include/asm/mach-ath79/ath79.h +@@ -68,6 +68,12 @@ static inline int soc_is_ar913x(void) + ath79_soc == ATH79_SOC_AR9132); + } + ++static inline int soc_is_ar933x(void) ++{ ++ return (ath79_soc == ATH79_SOC_AR9330 || ++ ath79_soc == ATH79_SOC_AR9331); ++} ++ + extern void __iomem *ath79_ddr_base; + extern void __iomem *ath79_pll_base; + extern void __iomem *ath79_reset_base; |