From a6e50a88d8d3724fc75f1c6959b80a6c7c69cbad Mon Sep 17 00:00:00 2001 From: Ian Campbell Date: Fri, 18 Jul 2014 20:38:41 +0100 Subject: ahci: provide sunxi SATA driver using AHCI platform framework This enables the necessary clocks, in AHB0 and in PLL6_CFG. This is done for sun7i only since I don't have access to any other sunxi platforms with sata included. The PHY setup is derived from the Alwinner releases and Linux, but is mostly undocumented. The Allwinner AHCI controller also requires some magic (and, again, undocumented) DMA initialisation when starting a port. This is added under a suitable ifdef. This option is enabled for Cubieboard, Cubieboard2 and Cubietruck based on contents of Linux DTS files, including SATA power pin config taken from the DTS. All build tested, but runtime tested on Cubieboard2 and Cubietruck only. Signed-off-by: Ian Campbell Acked-by: Hans de Goede Signed-off-by: Hans de Goede --- arch/arm/cpu/armv7/sunxi/clock_sun4i.c | 4 ++++ arch/arm/include/asm/arch-sunxi/clock_sun4i.h | 11 +++++++---- 2 files changed, 11 insertions(+), 4 deletions(-) (limited to 'arch/arm') diff --git a/arch/arm/cpu/armv7/sunxi/clock_sun4i.c b/arch/arm/cpu/armv7/sunxi/clock_sun4i.c index b8b16cf..ecbdb01 100644 --- a/arch/arm/cpu/armv7/sunxi/clock_sun4i.c +++ b/arch/arm/cpu/armv7/sunxi/clock_sun4i.c @@ -39,6 +39,10 @@ void clock_init_safe(void) setbits_le32(&ccm->ahb_gate0, 0x1 << AHB_GATE_OFFSET_DMA); #endif writel(PLL6_CFG_DEFAULT, &ccm->pll6_cfg); +#ifdef CONFIG_SUNXI_AHCI + setbits_le32(&ccm->ahb_gate0, 0x1 << AHB_GATE_OFFSET_SATA); + setbits_le32(&ccm->pll6_cfg, 0x1 << CCM_PLL6_CTRL_SATA_EN_SHIFT); +#endif } #endif diff --git a/arch/arm/include/asm/arch-sunxi/clock_sun4i.h b/arch/arm/include/asm/arch-sunxi/clock_sun4i.h index 928f3f2..2531cbd 100644 --- a/arch/arm/include/asm/arch-sunxi/clock_sun4i.h +++ b/arch/arm/include/asm/arch-sunxi/clock_sun4i.h @@ -218,10 +218,13 @@ struct sunxi_ccm_reg { #define CCM_PLL5_CTRL_BYPASS (0x1 << 30) #define CCM_PLL5_CTRL_EN (0x1 << 31) -#define CCM_PLL6_CTRL_N_SHIFT 8 -#define CCM_PLL6_CTRL_N_MASK (0x1f << CCM_PLL6_CTRL_N_SHIFT) -#define CCM_PLL6_CTRL_K_SHIFT 4 -#define CCM_PLL6_CTRL_K_MASK (0x3 << CCM_PLL6_CTRL_K_SHIFT) +#define CCM_PLL6_CTRL_EN 31 +#define CCM_PLL6_CTRL_BYPASS_EN 30 +#define CCM_PLL6_CTRL_SATA_EN_SHIFT 14 +#define CCM_PLL6_CTRL_N_SHIFT 8 +#define CCM_PLL6_CTRL_N_MASK (0x1f << CCM_PLL6_CTRL_N_SHIFT) +#define CCM_PLL6_CTRL_K_SHIFT 4 +#define CCM_PLL6_CTRL_K_MASK (0x3 << CCM_PLL6_CTRL_K_SHIFT) #define CCM_GPS_CTRL_RESET (0x1 << 0) #define CCM_GPS_CTRL_GATE (0x1 << 1) -- cgit v1.1