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112 lines
3.1 KiB
Diff
112 lines
3.1 KiB
Diff
From 73abb1f16e28d5a41d0abea779a3f0b75cf8823e Mon Sep 17 00:00:00 2001
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From: Detlev Casanova <detlev.casanova@collabora.com>
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Date: Wed, 28 Aug 2024 15:24:56 +0000
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Subject: [PATCH] mmc: dw_mmc-rockchip: Add support for rk3576 SoCs
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On rk3576 the tunable clocks are inside the controller itself, removing
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the need for the "ciu-drive" and "ciu-sample" clocks.
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That makes it a new type of controller that has its own dt_parse function.
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Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
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Reviewed-by: Heiko Stuebner <heiko@sntech.de>
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Link: https://lore.kernel.org/r/010201919997044d-c3a008d1-afbc-462f-a928-fc1ece785bdb-000000@eu-west-1.amazonses.com
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Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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---
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drivers/mmc/host/dw_mmc-rockchip.c | 48 ++++++++++++++++++++++++++----
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1 file changed, 43 insertions(+), 5 deletions(-)
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--- a/drivers/mmc/host/dw_mmc-rockchip.c
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+++ b/drivers/mmc/host/dw_mmc-rockchip.c
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@@ -407,7 +407,7 @@ free:
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return ret;
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}
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-static int dw_mci_rk3288_parse_dt(struct dw_mci *host)
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+static int dw_mci_common_parse_dt(struct dw_mci *host)
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{
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struct device_node *np = host->dev->of_node;
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struct dw_mci_rockchip_priv_data *priv;
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@@ -417,13 +417,29 @@ static int dw_mci_rk3288_parse_dt(struct
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return -ENOMEM;
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if (of_property_read_u32(np, "rockchip,desired-num-phases",
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- &priv->num_phases))
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+ &priv->num_phases))
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priv->num_phases = 360;
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if (of_property_read_u32(np, "rockchip,default-sample-phase",
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- &priv->default_sample_phase))
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+ &priv->default_sample_phase))
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priv->default_sample_phase = 0;
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+ host->priv = priv;
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+
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+ return 0;
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+}
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+
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+static int dw_mci_rk3288_parse_dt(struct dw_mci *host)
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+{
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+ struct dw_mci_rockchip_priv_data *priv;
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+ int err;
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+
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+ err = dw_mci_common_parse_dt(host);
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+ if (err)
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+ return err;
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+
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+ priv = host->priv;
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+
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priv->drv_clk = devm_clk_get(host->dev, "ciu-drive");
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if (IS_ERR(priv->drv_clk))
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dev_dbg(host->dev, "ciu-drive not available\n");
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@@ -432,13 +448,25 @@ static int dw_mci_rk3288_parse_dt(struct
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if (IS_ERR(priv->sample_clk))
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dev_dbg(host->dev, "ciu-sample not available\n");
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- host->priv = priv;
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-
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priv->internal_phase = false;
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return 0;
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}
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+static int dw_mci_rk3576_parse_dt(struct dw_mci *host)
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+{
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+ struct dw_mci_rockchip_priv_data *priv;
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+ int err = dw_mci_common_parse_dt(host);
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+ if (err)
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+ return err;
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+
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+ priv = host->priv;
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+
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+ priv->internal_phase = true;
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+
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+ return 0;
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+}
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+
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static int dw_mci_rockchip_init(struct dw_mci *host)
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{
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int ret, i;
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@@ -480,11 +508,21 @@ static const struct dw_mci_drv_data rk32
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.init = dw_mci_rockchip_init,
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};
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+static const struct dw_mci_drv_data rk3576_drv_data = {
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+ .common_caps = MMC_CAP_CMD23,
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+ .set_ios = dw_mci_rk3288_set_ios,
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+ .execute_tuning = dw_mci_rk3288_execute_tuning,
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+ .parse_dt = dw_mci_rk3576_parse_dt,
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+ .init = dw_mci_rockchip_init,
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+};
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+
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static const struct of_device_id dw_mci_rockchip_match[] = {
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{ .compatible = "rockchip,rk2928-dw-mshc",
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.data = &rk2928_drv_data },
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{ .compatible = "rockchip,rk3288-dw-mshc",
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.data = &rk3288_drv_data },
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+ { .compatible = "rockchip,rk3576-dw-mshc",
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+ .data = &rk3576_drv_data },
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{},
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};
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MODULE_DEVICE_TABLE(of, dw_mci_rockchip_match);
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