From 6d1fbe5b3d7231fed2eef78d4d8ea3c2c6e80269 Mon Sep 17 00:00:00 2001 From: Algea Cao Date: Wed, 4 Nov 2020 16:48:59 +0800 Subject: [PATCH] drm: rockchip: rk628: post_process: Enable y2r when input mode clk is 594Mhz Because hdmirx phy only support yuv420 when input mode is 4K-60Hz, y2r should be enabled. Change-Id: I1eca2c6783c63e07cb13b617bb32ff81f2229c7d Signed-off-by: Algea Cao --- drivers/gpu/drm/rockchip/rk628/rk628_post_process.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/rockchip/rk628/rk628_post_process.c b/drivers/gpu/drm/rockchip/rk628/rk628_post_process.c index af9aca69a267..4e2a5d56333d 100644 --- a/drivers/gpu/drm/rockchip/rk628/rk628_post_process.c +++ b/drivers/gpu/drm/rockchip/rk628/rk628_post_process.c @@ -275,6 +275,10 @@ static void rk628_post_process_bridge_mode_set(struct drm_bridge *bridge, drm_mode_copy(&pp->dst_mode, &rk628->dst_mode); else drm_mode_copy(&pp->dst_mode, &pp->src_mode); + + /* hdmirx 4k-60Hz mode only support yuv420 */ + if (pp->src_mode.clock == 594000) + regmap_write(pp->grf, GRF_CSC_CTRL_CON, SW_Y2R_EN(1)); } static int rk628_post_process_bridge_attach(struct drm_bridge *bridge)