sunxi: add clock configuration of R40 sata

R40 has a similar SATA controller with the ones on A10/A20, but with a
reset line added (like other peripherals on sun6i+), and two extra VDD
pins added (1.2v and 2.5v).

Add clock configuration of R40 SATA.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

diff --git a/arch/arm/include/asm/arch-sunxi/clock_sun6i.h b/arch/arm/include/asm/arch-sunxi/clock_sun6i.h
index a44ea77..faa1479 100644 (file)
--- a/arch/arm/include/asm/arch-sunxi/clock_sun6i.h
+++ b/arch/arm/include/asm/arch-sunxi/clock_sun6i.h
@@ -25,7 +25,7 @@ struct sunxi_ccm_reg {
        u32 pll6_cfg;           /* 0x28 pll6 control */
        u32 reserved5;
        u32 pll7_cfg;           /* 0x30 pll7 control */
-       u32 reserved6;
+       u32 sata_pll_cfg;       /* 0x34 SATA pll control (R40 only) */
        u32 pll8_cfg;           /* 0x38 pll8 control */
        u32 reserved7;
        u32 mipi_pll_cfg;       /* 0x40 MIPI pll control */
@@ -58,7 +58,8 @@ struct sunxi_ccm_reg {
        u32 i2s1_clk_cfg;       /* 0xb4 I2S1 clock control */
        u32 reserved10[2];
        u32 spdif_clk_cfg;      /* 0xc0 SPDIF clock control */
-       u32 reserved11[2];
+       u32 reserved11;
+       u32 sata_clk_cfg;       /* 0xc8 SATA clock control (R40 only) */
        u32 usb_clk_cfg;        /* 0xcc USB clock control */
        u32 gmac_clk_cfg;       /* 0xd0 GMAC clock control */
        u32 reserved12[7];
@@ -224,6 +225,8 @@ struct sunxi_ccm_reg {
 #define CCM_PLL6_CTRL_K_MASK           (0x3 << CCM_PLL6_CTRL_K_SHIFT)
 #define CCM_PLL6_CTRL_LOCK             (1 << 28)
 
+#define CCM_SATA_PLL_DEFAULT           0x90005811 /* 100 MHz */
+
 #define CCM_MIPI_PLL_CTRL_M_SHIFT      0
 #define CCM_MIPI_PLL_CTRL_M_MASK       (0xf << CCM_MIPI_PLL_CTRL_M_SHIFT)
 #define CCM_MIPI_PLL_CTRL_M(n)         ((((n) - 1) & 0xf) << 0)
@@ -280,7 +283,12 @@ struct sunxi_ccm_reg {
 #define AHB_GATE_OFFSET_USB_EHCI1      27
 #define AHB_GATE_OFFSET_USB_EHCI0      26
 #endif
+#ifndef CONFIG_MACH_SUN8I_R40
 #define AHB_GATE_OFFSET_USB0           24
+#else
+#define AHB_GATE_OFFSET_USB0           25
+#define AHB_GATE_OFFSET_SATA           24
+#endif
 #define AHB_GATE_OFFSET_MCTL           14
 #define AHB_GATE_OFFSET_GMAC           17
 #define AHB_GATE_OFFSET_NAND0          13
@@ -315,6 +323,9 @@ struct sunxi_ccm_reg {
 #define CCM_MMC_CTRL_PLL6              (0x1 << 24)
 #define CCM_MMC_CTRL_ENABLE            (0x1 << 31)
 
+#define CCM_SATA_CTRL_ENABLE           (0x1 << 31)
+#define CCM_SATA_CTRL_USE_EXTCLK       (0x1 << 24)
+
 #define CCM_USB_CTRL_PHY0_RST (0x1 << 0)
 #define CCM_USB_CTRL_PHY1_RST (0x1 << 1)
 #define CCM_USB_CTRL_PHY2_RST (0x1 << 2)
@@ -417,6 +428,9 @@ struct sunxi_ccm_reg {
 #define CCM_PLL11_PATTERN              0xf5860000
 
 /* ahb_reset0 offsets */
+#ifdef CONFIG_MACH_SUN8I_R40
+#define AHB_RESET_OFFSET_SATA          24
+#endif
 #define AHB_RESET_OFFSET_GMAC          17
 #define AHB_RESET_OFFSET_MCTL          14
 #define AHB_RESET_OFFSET_MMC3          11

diff --git a/arch/arm/mach-sunxi/clock_sun6i.c b/arch/arm/mach-sunxi/clock_sun6i.c
index 631bc6e..ec5b026 100644 (file)
--- a/arch/arm/mach-sunxi/clock_sun6i.c
+++ b/arch/arm/mach-sunxi/clock_sun6i.c
@@ -51,6 +51,13 @@ void clock_init_safe(void)
        writel(MBUS_CLK_DEFAULT, &ccm->mbus0_clk_cfg);
        if (IS_ENABLED(CONFIG_MACH_SUN6I))
                writel(MBUS_CLK_DEFAULT, &ccm->mbus1_clk_cfg);
+
+#if defined(CONFIG_MACH_SUN8I_R40) && defined(CONFIG_SUNXI_AHCI)
+       setbits_le32(&ccm->sata_pll_cfg, CCM_SATA_PLL_DEFAULT);
+       setbits_le32(&ccm->ahb_reset0_cfg, 0x1 << AHB_GATE_OFFSET_SATA);
+       setbits_le32(&ccm->ahb_gate0, 0x1 << AHB_GATE_OFFSET_SATA);
+       setbits_le32(&ccm->sata_clk_cfg, CCM_SATA_CTRL_ENABLE);
+#endif
 }
 #endif