MT8365 requires an additional clock for DPI. Add support for that additional clock.
Signed-off-by: Fabien Parent fparent@baylibre.com --- drivers/gpu/drm/mediatek/mtk_dpi.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index e61cd67b978f..7872db60840e 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -72,6 +72,7 @@ struct mtk_dpi { struct device *dev; struct clk *engine_clk; struct clk *pixel_clk; + struct clk *dpi_clk; struct clk *tvd_clk; int irq; struct drm_display_mode mode; @@ -412,6 +413,7 @@ static void mtk_dpi_power_off(struct mtk_dpi *dpi) mtk_dpi_disable(dpi); clk_disable_unprepare(dpi->pixel_clk); clk_disable_unprepare(dpi->engine_clk); + clk_disable_unprepare(dpi->dpi_clk); }
static int mtk_dpi_power_on(struct mtk_dpi *dpi) @@ -421,10 +423,16 @@ static int mtk_dpi_power_on(struct mtk_dpi *dpi) if (++dpi->refcount != 1) return 0;
+ ret = clk_prepare_enable(dpi->dpi_clk); + if (ret) { + dev_err(dpi->dev, "failed to enable dpi clock: %d\n", ret); + goto err_refcount; + } + ret = clk_prepare_enable(dpi->engine_clk); if (ret) { dev_err(dpi->dev, "Failed to enable engine clock: %d\n", ret); - goto err_refcount; + goto err_engine; }
ret = clk_prepare_enable(dpi->pixel_clk); @@ -441,6 +449,8 @@ static int mtk_dpi_power_on(struct mtk_dpi *dpi)
err_pixel: clk_disable_unprepare(dpi->engine_clk); +err_engine: + clk_disable_unprepare(dpi->dpi_clk); err_refcount: dpi->refcount--; return ret; @@ -893,6 +903,12 @@ static int mtk_dpi_probe(struct platform_device *pdev) return ret; }
+ dpi->dpi_clk = devm_clk_get_optional(dev, "dpi"); + if (IS_ERR(dpi->dpi_clk)) { + return dev_err_probe(dev, ret, "Failed to get dpi clock: %pe\n", + dpi->dpi_clk); + } + dpi->irq = platform_get_irq(pdev, 0); if (dpi->irq <= 0) return -EINVAL;