From 71dcadba34203d8dd35152e368720f977e9cdb81 Mon Sep 17 00:00:00 2001

From: Yongqiang Niu <yongqiang.niu@mediatek.com>

Date: Mon, 11 Jan 2021 15:43:47 +0800

Subject: drm/mediatek: Fix aal size config

Git-commit: 71dcadba34203d8dd35152e368720f977e9cdb81

Patch-mainline: v5.12-rc1

References: bsc#1129770

The orginal setting is not correct, fix it to follow hardware data sheet.

If keep this error setting, mt8173/mt8183 display ok

but mt8192 display abnormal.

Fixes: 0664d1392c26 ("drm/mediatek: Add AAL engine basic function")

Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>

Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>

Acked-by: Thomas Zimmermann <tzimmermann@suse.de>

---

 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c |    2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c

+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c

@@ -118,7 +118,7 @@ static void mtk_aal_config(struct mtk_dd

 			   unsigned int h, unsigned int vrefresh,

 			   unsigned int bpc)

 {

-	writel(h << 16 | w, comp->regs + DISP_AAL_SIZE);

+	writel(w << 16 | w, comp->regs + DISP_AAL_SIZE);

 }

 static void mtk_aal_start(struct mtk_ddp_comp *comp)