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This is required for platforms like i.MX8QM, which rely on the PHY driver for powering the MIPI CSI PHY on and off. Add reset delay for i.MX8QM. It needs a delay after toggle reset. Signed-off-by: Frank Li --- drivers/media/platform/nxp/imx8mq-mipi-csi2.c | 46 +++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/drivers/media/platform/nxp/imx8mq-mipi-csi2.c b/drivers/media/platform/nxp/imx8mq-mipi-csi2.c index b5eae56d92f49..df34caffd4a3a 100644 --- a/drivers/media/platform/nxp/imx8mq-mipi-csi2.c +++ b/drivers/media/platform/nxp/imx8mq-mipi-csi2.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -89,6 +90,8 @@ struct imx8mq_plat_data { const char *name; int (*enable)(struct csi_state *state, u32 hs_settle); void (*disable)(struct csi_state *state); + bool use_phydrv: 1; + int reset_delay; }; /* @@ -125,6 +128,7 @@ struct csi_state { u32 state; struct regmap *phy_gpr; + struct phy *phy; u8 phy_gpr_reg; struct icc_path *icc_path; @@ -169,6 +173,37 @@ static const struct imx8mq_plat_data imx8mq_data = { .enable = imx8mq_gpr_enable, }; +/* ----------------------------------------------------------------------------- + * Use common PHY interface + */ +static int imx8_phy_enable(struct csi_state *state, u32 hs_settle) +{ + int ret; + + ret = phy_set_speed(state->phy, hs_settle); + if (ret) + return ret; + + ret = phy_power_on(state->phy); + if (ret) + return ret; + + return 0; +} + +static void imx8_phy_disable(struct csi_state *state) +{ + phy_power_off(state->phy); +} + +static const struct imx8mq_plat_data imx8qm_data = { + .name = "i.MX8QM", + .enable = imx8_phy_enable, + .disable = imx8_phy_disable, + .use_phydrv = 1, + .reset_delay = 10000, +}; + static const struct csi2_pix_format imx8mq_mipi_csi_formats[] = { /* RAW (Bayer and greyscale) formats. */ { @@ -273,6 +308,8 @@ static int imx8mq_mipi_csi_sw_reset(struct csi_state *state) return ret; } + fsleep(state->pdata->reset_delay); + return 0; } @@ -860,6 +897,14 @@ static int imx8mq_mipi_csi_parse_dt(struct csi_state *state) return PTR_ERR(state->rst); } + if (state->pdata->use_phydrv) { + state->phy = devm_of_phy_get_by_index(dev, dev->of_node, 0); + if (IS_ERR(state->phy)) + return dev_err_probe(dev, PTR_ERR(state->phy), "Can't get mipi phy\n"); + + return 0; + } + ret = of_property_read_u32_array(np, "fsl,mipi-phy-gpr", out_val, ARRAY_SIZE(out_val)); if (ret) { @@ -979,6 +1024,7 @@ static void imx8mq_mipi_csi_remove(struct platform_device *pdev) static const struct of_device_id imx8mq_mipi_csi_of_match[] = { { .compatible = "fsl,imx8mq-mipi-csi2", .data = &imx8mq_data }, + { .compatible = "fsl,imx8qm-mipi-csi2", .data = &imx8qm_data }, { /* sentinel */ }, }; MODULE_DEVICE_TABLE(of, imx8mq_mipi_csi_of_match);