From e8f37f4203983f75cadd857c9c7e6d6477bf3e54 Mon Sep 17 00:00:00 2001 From: Jagan Teki Date: Wed, 9 Jan 2019 16:58:39 +0530 Subject: [PATCH] mmc: sunxi: Fix mmc clocks for DM_MMC Existing clock configure code has been followed based on the legacy MMC dt node definitions and it cannot work with recent dts(i) sync from Linux. So, add clock configure code for Allwinner platforms which support DM_MMC and eventually this will drop once CLK support is in Mainline. Fixes: 3c92cca3cda0 ("ARM: dts: sun4i: Update A10 dts(i) files from Linux-v4.18-rc3") Signed-off-by: Jagan Teki Tested-by: Priit Laes # Gemei G9 A10 Tablet Tested-by: Marek Kraus # A10-OLinuXino-Lime --- drivers/mmc/sunxi_mmc.c | 50 ++++++++++++++++++++++++++++++++++++------------- 1 file changed, 37 insertions(+), 13 deletions(-) diff --git a/drivers/mmc/sunxi_mmc.c b/drivers/mmc/sunxi_mmc.c index 9bf040c..302332b 100644 --- a/drivers/mmc/sunxi_mmc.c +++ b/drivers/mmc/sunxi_mmc.c @@ -19,6 +19,13 @@ #include #include +#ifdef CONFIG_DM_MMC +struct sunxi_mmc_variant { + u16 gate_offset; + u16 mclk_offset; +}; +#endif + struct sunxi_mmc_plat { struct mmc_config cfg; struct mmc mmc; @@ -32,6 +39,9 @@ struct sunxi_mmc_priv { int cd_inverted; /* Inverted Card Detect */ struct sunxi_mmc *reg; struct mmc_config cfg; +#ifdef CONFIG_DM_MMC + const struct sunxi_mmc_variant *variant; +#endif }; #if !CONFIG_IS_ENABLED(DM_MMC) @@ -599,7 +609,7 @@ static int sunxi_mmc_probe(struct udevice *dev) struct sunxi_mmc_priv *priv = dev_get_priv(dev); struct mmc_config *cfg = &plat->cfg; struct ofnode_phandle_args args; - u32 *gate_reg; + u32 *gate_reg, *ccu_reg; int bus_width, ret; cfg->name = dev->name; @@ -618,21 +628,21 @@ static int sunxi_mmc_probe(struct udevice *dev) cfg->f_max = 52000000; priv->reg = (void *)dev_read_addr(dev); + priv->variant = + (const struct sunxi_mmc_variant *)dev_get_driver_data(dev); /* We don't have a sunxi clock driver so find the clock address here */ ret = dev_read_phandle_with_args(dev, "clocks", "#clock-cells", 0, 1, &args); if (ret) return ret; - priv->mclkreg = (u32 *)ofnode_get_addr(args.node); + ccu_reg = (u32 *)ofnode_get_addr(args.node); - ret = dev_read_phandle_with_args(dev, "clocks", "#clock-cells", 0, - 0, &args); - if (ret) - return ret; - gate_reg = (u32 *)ofnode_get_addr(args.node); - setbits_le32(gate_reg, 1 << args.args[0]); - priv->mmc_no = args.args[0] - 8; + priv->mmc_no = ((uintptr_t)priv->reg - SUNXI_MMC0_BASE) / 0x1000; + priv->mclkreg = (void *)ccu_reg + + (priv->variant->mclk_offset + (priv->mmc_no * 4)); + gate_reg = (void *)ccu_reg + priv->variant->gate_offset; + setbits_le32(gate_reg, BIT(AHB_GATE_OFFSET_MMC(priv->mmc_no))); ret = mmc_set_mod_clk(priv, 24000000); if (ret) @@ -665,11 +675,25 @@ static int sunxi_mmc_bind(struct udevice *dev) return mmc_bind(dev, &plat->mmc, &plat->cfg); } +static const struct sunxi_mmc_variant sun4i_a10_variant = { + .gate_offset = 0x60, + .mclk_offset = 0x88, +}; + static const struct udevice_id sunxi_mmc_ids[] = { - { .compatible = "allwinner,sun4i-a10-mmc" }, - { .compatible = "allwinner,sun5i-a13-mmc" }, - { .compatible = "allwinner,sun7i-a20-mmc" }, - { } + { + .compatible = "allwinner,sun4i-a10-mmc", + .data = (ulong)&sun4i_a10_variant, + }, + { + .compatible = "allwinner,sun5i-a13-mmc", + .data = (ulong)&sun4i_a10_variant, + }, + { + .compatible = "allwinner,sun7i-a20-mmc", + .data = (ulong)&sun4i_a10_variant, + }, + { /* sentinel */ } }; U_BOOT_DRIVER(sunxi_mmc_drv) = { -- 2.7.4