diff options
Diffstat (limited to 'target/linux/ar71xx/patches-3.8/162-MIPS-ath79-add-clock-setup-for-the-QCA955X-SoCs.patch')
| -rw-r--r-- | target/linux/ar71xx/patches-3.8/162-MIPS-ath79-add-clock-setup-for-the-QCA955X-SoCs.patch | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/target/linux/ar71xx/patches-3.8/162-MIPS-ath79-add-clock-setup-for-the-QCA955X-SoCs.patch b/target/linux/ar71xx/patches-3.8/162-MIPS-ath79-add-clock-setup-for-the-QCA955X-SoCs.patch new file mode 100644 index 0000000000..bb0924c430 --- /dev/null +++ b/target/linux/ar71xx/patches-3.8/162-MIPS-ath79-add-clock-setup-for-the-QCA955X-SoCs.patch @@ -0,0 +1,167 @@ +From f465a16766a015a31d4e83af1ad62cc718d64f5a Mon Sep 17 00:00:00 2001 +From: Gabor Juhos <juhosg@openwrt.org> +Date: Sun, 24 Jun 2012 13:43:08 +0200 +Subject: [PATCH 18/34] MIPS: ath79: add clock setup for the QCA955X SoCs + +Signed-off-by: Gabor Juhos <juhosg@openwrt.org> +--- + arch/mips/ath79/clock.c | 78 ++++++++++++++++++++++++ + arch/mips/include/asm/mach-ath79/ar71xx_regs.h | 39 ++++++++++++ + 2 files changed, 117 insertions(+), 0 deletions(-) + +--- 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 qca955x_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(QCA955X_RESET_REG_BOOTSTRAP); ++ if (bootstrap & QCA955X_BOOTSTRAP_REF_CLK_40) ++ ath79_ref_clk.rate = 40 * 1000 * 1000; ++ else ++ ath79_ref_clk.rate = 25 * 1000 * 1000; ++ ++ pll = ath79_pll_rr(QCA955X_PLL_CPU_CONFIG_REG); ++ out_div = (pll >> QCA955X_PLL_CPU_CONFIG_OUTDIV_SHIFT) & ++ QCA955X_PLL_CPU_CONFIG_OUTDIV_MASK; ++ ref_div = (pll >> QCA955X_PLL_CPU_CONFIG_REFDIV_SHIFT) & ++ QCA955X_PLL_CPU_CONFIG_REFDIV_MASK; ++ nint = (pll >> QCA955X_PLL_CPU_CONFIG_NINT_SHIFT) & ++ QCA955X_PLL_CPU_CONFIG_NINT_MASK; ++ frac = (pll >> QCA955X_PLL_CPU_CONFIG_NFRAC_SHIFT) & ++ QCA955X_PLL_CPU_CONFIG_NFRAC_MASK; ++ ++ cpu_pll = nint * ath79_ref_clk.rate / ref_div; ++ cpu_pll += frac * ath79_ref_clk.rate / (ref_div * (1 << 6)); ++ cpu_pll /= (1 << out_div); ++ ++ pll = ath79_pll_rr(QCA955X_PLL_DDR_CONFIG_REG); ++ out_div = (pll >> QCA955X_PLL_DDR_CONFIG_OUTDIV_SHIFT) & ++ QCA955X_PLL_DDR_CONFIG_OUTDIV_MASK; ++ ref_div = (pll >> QCA955X_PLL_DDR_CONFIG_REFDIV_SHIFT) & ++ QCA955X_PLL_DDR_CONFIG_REFDIV_MASK; ++ nint = (pll >> QCA955X_PLL_DDR_CONFIG_NINT_SHIFT) & ++ QCA955X_PLL_DDR_CONFIG_NINT_MASK; ++ frac = (pll >> QCA955X_PLL_DDR_CONFIG_NFRAC_SHIFT) & ++ QCA955X_PLL_DDR_CONFIG_NFRAC_MASK; ++ ++ ddr_pll = nint * ath79_ref_clk.rate / ref_div; ++ ddr_pll += frac * ath79_ref_clk.rate / (ref_div * (1 << 10)); ++ ddr_pll /= (1 << out_div); ++ ++ clk_ctrl = ath79_pll_rr(QCA955X_PLL_CLK_CTRL_REG); ++ ++ postdiv = (clk_ctrl >> QCA955X_PLL_CLK_CTRL_CPU_POST_DIV_SHIFT) & ++ QCA955X_PLL_CLK_CTRL_CPU_POST_DIV_MASK; ++ ++ if (clk_ctrl & QCA955X_PLL_CLK_CTRL_CPU_PLL_BYPASS) ++ ath79_cpu_clk.rate = ath79_ref_clk.rate; ++ else if (clk_ctrl & QCA955X_PLL_CLK_CTRL_CPUCLK_FROM_CPUPLL) ++ ath79_cpu_clk.rate = ddr_pll / (postdiv + 1); ++ else ++ ath79_cpu_clk.rate = cpu_pll / (postdiv + 1); ++ ++ postdiv = (clk_ctrl >> QCA955X_PLL_CLK_CTRL_DDR_POST_DIV_SHIFT) & ++ QCA955X_PLL_CLK_CTRL_DDR_POST_DIV_MASK; ++ ++ if (clk_ctrl & QCA955X_PLL_CLK_CTRL_DDR_PLL_BYPASS) ++ ath79_ddr_clk.rate = ath79_ref_clk.rate; ++ else if (clk_ctrl & QCA955X_PLL_CLK_CTRL_DDRCLK_FROM_DDRPLL) ++ ath79_ddr_clk.rate = cpu_pll / (postdiv + 1); ++ else ++ ath79_ddr_clk.rate = ddr_pll / (postdiv + 1); ++ ++ postdiv = (clk_ctrl >> QCA955X_PLL_CLK_CTRL_AHB_POST_DIV_SHIFT) & ++ QCA955X_PLL_CLK_CTRL_AHB_POST_DIV_MASK; ++ ++ if (clk_ctrl & QCA955X_PLL_CLK_CTRL_AHB_PLL_BYPASS) ++ ath79_ahb_clk.rate = ath79_ref_clk.rate; ++ else if (clk_ctrl & QCA955X_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; ++} ++ + void __init ath79_clocks_init(void) + { + if (soc_is_ar71xx()) +@@ -307,6 +383,8 @@ void __init ath79_clocks_init(void) + ar933x_clocks_init(); + else if (soc_is_ar934x()) + ar934x_clocks_init(); ++ else if (soc_is_qca955x()) ++ qca955x_clocks_init(); + else + BUG(); + +--- a/arch/mips/include/asm/mach-ath79/ar71xx_regs.h ++++ b/arch/mips/include/asm/mach-ath79/ar71xx_regs.h +@@ -225,6 +225,41 @@ + #define AR934X_PLL_CPU_DDR_CLK_CTRL_DDRCLK_FROM_DDRPLL BIT(21) + #define AR934X_PLL_CPU_DDR_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 ++ ++#define QCA955X_PLL_CPU_CONFIG_NFRAC_SHIFT 0 ++#define QCA955X_PLL_CPU_CONFIG_NFRAC_MASK 0x3f ++#define QCA955X_PLL_CPU_CONFIG_NINT_SHIFT 6 ++#define QCA955X_PLL_CPU_CONFIG_NINT_MASK 0x3f ++#define QCA955X_PLL_CPU_CONFIG_REFDIV_SHIFT 12 ++#define QCA955X_PLL_CPU_CONFIG_REFDIV_MASK 0x1f ++#define QCA955X_PLL_CPU_CONFIG_OUTDIV_SHIFT 19 ++#define QCA955X_PLL_CPU_CONFIG_OUTDIV_MASK 0x3 ++ ++#define QCA955X_PLL_DDR_CONFIG_NFRAC_SHIFT 0 ++#define QCA955X_PLL_DDR_CONFIG_NFRAC_MASK 0x3ff ++#define QCA955X_PLL_DDR_CONFIG_NINT_SHIFT 10 ++#define QCA955X_PLL_DDR_CONFIG_NINT_MASK 0x3f ++#define QCA955X_PLL_DDR_CONFIG_REFDIV_SHIFT 16 ++#define QCA955X_PLL_DDR_CONFIG_REFDIV_MASK 0x1f ++#define QCA955X_PLL_DDR_CONFIG_OUTDIV_SHIFT 23 ++#define QCA955X_PLL_DDR_CONFIG_OUTDIV_MASK 0x7 ++ ++#define QCA955X_PLL_CLK_CTRL_CPU_PLL_BYPASS BIT(2) ++#define QCA955X_PLL_CLK_CTRL_DDR_PLL_BYPASS BIT(3) ++#define QCA955X_PLL_CLK_CTRL_AHB_PLL_BYPASS BIT(4) ++#define QCA955X_PLL_CLK_CTRL_CPU_POST_DIV_SHIFT 5 ++#define QCA955X_PLL_CLK_CTRL_CPU_POST_DIV_MASK 0x1f ++#define QCA955X_PLL_CLK_CTRL_DDR_POST_DIV_SHIFT 10 ++#define QCA955X_PLL_CLK_CTRL_DDR_POST_DIV_MASK 0x1f ++#define QCA955X_PLL_CLK_CTRL_AHB_POST_DIV_SHIFT 15 ++#define QCA955X_PLL_CLK_CTRL_AHB_POST_DIV_MASK 0x1f ++#define QCA955X_PLL_CLK_CTRL_CPUCLK_FROM_CPUPLL BIT(20) ++#define QCA955X_PLL_CLK_CTRL_DDRCLK_FROM_DDRPLL BIT(21) ++#define QCA955X_PLL_CLK_CTRL_AHBCLK_FROM_DDRPLL BIT(24) ++ + /* + * USB_CONFIG block + */ +@@ -264,6 +299,8 @@ + #define AR934X_RESET_REG_BOOTSTRAP 0xb0 + #define AR934X_RESET_REG_PCIE_WMAC_INT_STATUS 0xac + ++#define QCA955X_RESET_REG_BOOTSTRAP 0xb0 ++ + #define MISC_INT_ETHSW BIT(12) + #define MISC_INT_TIMER4 BIT(10) + #define MISC_INT_TIMER3 BIT(9) +@@ -341,6 +378,8 @@ + #define AR934X_BOOTSTRAP_SDRAM_DISABLED BIT(1) + #define AR934X_BOOTSTRAP_DDR1 BIT(0) + ++#define QCA955X_BOOTSTRAP_REF_CLK_40 BIT(4) ++ + #define AR934X_PCIE_WMAC_INT_WMAC_MISC BIT(0) + #define AR934X_PCIE_WMAC_INT_WMAC_TX BIT(1) + #define AR934X_PCIE_WMAC_INT_WMAC_RXLP BIT(2) |