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mmc: dw_mmc-rockchip: Add support for rk3576 SoCs

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On rk3576 the tunable clocks are inside the controller itself, removing
the need for the "ciu-drive" and "ciu-sample" clocks.

That makes it a new type of controller that has its own dt_parse function.

Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/010201919997044d-c3a008d1-afbc-462f-a928-fc1ece785bdb-000000@eu-west-1.amazonses.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Detlev Casanova 2024-08-28 15:24:56 +00:00 committed by Ulf Hansson
parent 59903441f5
commit 73abb1f16e
1 changed files with 43 additions and 5 deletions
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48
drivers/mmc/host/dw_mmc-rockchip.c
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@ -407,7 +407,7 @@ free:
return ret;
}
static int dw_mci_rk3288_parse_dt(struct dw_mci *host)
static int dw_mci_common_parse_dt(struct dw_mci *host)
{
struct device_node *np = host->dev->of_node;
struct dw_mci_rockchip_priv_data *priv;
@ -417,13 +417,29 @@ static int dw_mci_rk3288_parse_dt(struct dw_mci *host)
return -ENOMEM;
if (of_property_read_u32(np, "rockchip,desired-num-phases",
&priv->num_phases))
&priv->num_phases))
priv->num_phases = 360;
if (of_property_read_u32(np, "rockchip,default-sample-phase",
&priv->default_sample_phase))
&priv->default_sample_phase))
priv->default_sample_phase = 0;
host->priv = priv;
return 0;
}
static int dw_mci_rk3288_parse_dt(struct dw_mci *host)
{
struct dw_mci_rockchip_priv_data *priv;
int err;
err = dw_mci_common_parse_dt(host);
if (err)
return err;
priv = host->priv;
priv->drv_clk = devm_clk_get(host->dev, "ciu-drive");
if (IS_ERR(priv->drv_clk))
dev_dbg(host->dev, "ciu-drive not available\n");
@ -432,13 +448,25 @@ static int dw_mci_rk3288_parse_dt(struct dw_mci *host)
if (IS_ERR(priv->sample_clk))
dev_dbg(host->dev, "ciu-sample not available\n");
host->priv = priv;
priv->internal_phase = false;
return 0;
}
static int dw_mci_rk3576_parse_dt(struct dw_mci *host)
{
struct dw_mci_rockchip_priv_data *priv;
int err = dw_mci_common_parse_dt(host);
if (err)
return err;
priv = host->priv;
priv->internal_phase = true;
return 0;
}
static int dw_mci_rockchip_init(struct dw_mci *host)
{
int ret, i;
@ -480,11 +508,21 @@ static const struct dw_mci_drv_data rk3288_drv_data = {
.init = dw_mci_rockchip_init,
};
static const struct dw_mci_drv_data rk3576_drv_data = {
.common_caps = MMC_CAP_CMD23,
.set_ios = dw_mci_rk3288_set_ios,
.execute_tuning = dw_mci_rk3288_execute_tuning,
.parse_dt = dw_mci_rk3576_parse_dt,
.init = dw_mci_rockchip_init,
};
static const struct of_device_id dw_mci_rockchip_match[] = {
{ .compatible = "rockchip,rk2928-dw-mshc",
.data = &rk2928_drv_data },
{ .compatible = "rockchip,rk3288-dw-mshc",
.data = &rk3288_drv_data },
{ .compatible = "rockchip,rk3576-dw-mshc",
.data = &rk3576_drv_data },
{},
};
MODULE_DEVICE_TABLE(of, dw_mci_rockchip_match);