diff options
Diffstat (limited to 'drivers/mmc/host/sunxi-mmc.c')
| -rw-r--r-- | drivers/mmc/host/sunxi-mmc.c | 53 |
1 files changed, 39 insertions, 14 deletions
diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c index a7b7a6771598..b981b8552e43 100644 --- a/drivers/mmc/host/sunxi-mmc.c +++ b/drivers/mmc/host/sunxi-mmc.c @@ -210,6 +210,16 @@ #define SDXC_IDMAC_DES0_CES BIT(30) /* card error summary */ #define SDXC_IDMAC_DES0_OWN BIT(31) /* 1-idma owns it, 0-host owns it */ +#define SDXC_CLK_400K 0 +#define SDXC_CLK_25M 1 +#define SDXC_CLK_50M 2 +#define SDXC_CLK_50M_DDR 3 + +struct sunxi_mmc_clk_delay { + u32 output; + u32 sample; +}; + struct sunxi_idma_des { u32 config; u32 buf_size; @@ -229,6 +239,7 @@ struct sunxi_mmc_host { struct clk *clk_mmc; struct clk *clk_sample; struct clk *clk_output; + const struct sunxi_mmc_clk_delay *clk_delays; /* irq */ spinlock_t lock; @@ -654,25 +665,19 @@ static int sunxi_mmc_clk_set_rate(struct sunxi_mmc_host *host, /* determine delays */ if (rate <= 400000) { - oclk_dly = 180; - sclk_dly = 42; + oclk_dly = host->clk_delays[SDXC_CLK_400K].output; + sclk_dly = host->clk_delays[SDXC_CLK_400K].sample; } else if (rate <= 25000000) { - oclk_dly = 180; - sclk_dly = 75; + oclk_dly = host->clk_delays[SDXC_CLK_25M].output; + sclk_dly = host->clk_delays[SDXC_CLK_25M].sample; } else if (rate <= 50000000) { if (ios->timing == MMC_TIMING_UHS_DDR50) { - oclk_dly = 60; - sclk_dly = 120; + oclk_dly = host->clk_delays[SDXC_CLK_50M_DDR].output; + sclk_dly = host->clk_delays[SDXC_CLK_50M_DDR].sample; } else { - oclk_dly = 90; - sclk_dly = 150; + oclk_dly = host->clk_delays[SDXC_CLK_50M].output; + sclk_dly = host->clk_delays[SDXC_CLK_50M].sample; } - } else if (rate <= 100000000) { - oclk_dly = 6; - sclk_dly = 24; - } else if (rate <= 200000000) { - oclk_dly = 3; - sclk_dly = 12; } else { return -EINVAL; } @@ -871,6 +876,7 @@ static void sunxi_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq) static const struct of_device_id sunxi_mmc_of_match[] = { { .compatible = "allwinner,sun4i-a10-mmc", }, { .compatible = "allwinner,sun5i-a13-mmc", }, + { .compatible = "allwinner,sun9i-a80-mmc", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, sunxi_mmc_of_match); @@ -884,6 +890,20 @@ static struct mmc_host_ops sunxi_mmc_ops = { .hw_reset = sunxi_mmc_hw_reset, }; +static const struct sunxi_mmc_clk_delay sunxi_mmc_clk_delays[] = { + [SDXC_CLK_400K] = { .output = 180, .sample = 180 }, + [SDXC_CLK_25M] = { .output = 180, .sample = 75 }, + [SDXC_CLK_50M] = { .output = 90, .sample = 120 }, + [SDXC_CLK_50M_DDR] = { .output = 60, .sample = 120 }, +}; + +static const struct sunxi_mmc_clk_delay sun9i_mmc_clk_delays[] = { + [SDXC_CLK_400K] = { .output = 180, .sample = 180 }, + [SDXC_CLK_25M] = { .output = 180, .sample = 75 }, + [SDXC_CLK_50M] = { .output = 150, .sample = 120 }, + [SDXC_CLK_50M_DDR] = { .output = 90, .sample = 120 }, +}; + static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host, struct platform_device *pdev) { @@ -895,6 +915,11 @@ static int sunxi_mmc_resource_request(struct sunxi_mmc_host *host, else host->idma_des_size_bits = 16; + if (of_device_is_compatible(np, "allwinner,sun9i-a80-mmc")) + host->clk_delays = sun9i_mmc_clk_delays; + else + host->clk_delays = sunxi_mmc_clk_delays; + ret = mmc_regulator_get_supply(host->mmc); if (ret) { if (ret != -EPROBE_DEFER) |