diff mbox series

[v8,6/7] drm/mediatek: add mt8183 dpi clock factor

Message ID 20200225094057.120144-7-jitao.shi@mediatek.com
State New
Headers show
Series [v8,1/7] dt-bindings: media: add pclk-sample dual edge property | expand

Commit Message

Jitao Shi Feb. 25, 2020, 9:40 a.m. UTC 
The factor depends on the divider of DPI in MT8183, therefore,
we should fix this factor to the right and new one.

Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>

Reviewed-by: CK Hu <ck.hu@mediatek.com>

---
 drivers/gpu/drm/mediatek/mtk_dpi.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

-- 
2.21.0
diff mbox series

Patch

diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index df598f87a40f..db3272f7a4c4 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -676,6 +676,16 @@  static unsigned int mt2701_calculate_factor(int clock)
 		return 1;
 }
 
+static unsigned int mt8183_calculate_factor(int clock)
+{
+	if (clock <= 27000)
+		return 8;
+	else if (clock <= 167000)
+		return 4;
+	else
+		return 2;
+}
+
 static const struct mtk_dpi_conf mt8173_conf = {
 	.cal_factor = mt8173_calculate_factor,
 	.reg_h_fre_con = 0xe0,
@@ -687,6 +697,11 @@  static const struct mtk_dpi_conf mt2701_conf = {
 	.edge_sel_en = true,
 };
 
+static const struct mtk_dpi_conf mt8183_conf = {
+	.cal_factor = mt8183_calculate_factor,
+	.reg_h_fre_con = 0xe0,
+};
+
 static int mtk_dpi_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -784,6 +799,9 @@  static const struct of_device_id mtk_dpi_of_ids[] = {
 	{ .compatible = "mediatek,mt8173-dpi",
 	  .data = &mt8173_conf,
 	},
+	{ .compatible = "mediatek,mt8183-dpi",
+	  .data = &mt8183_conf,
+	},
 	{ },
 };