From d99a0725f03e5cbae6c54add1ff628f20671dd5f Mon Sep 17 00:00:00 2001
From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Date: Sat, 14 Dec 2024 00:14:17 +0200
Subject: [PATCH] drm/msm/dpu: skip watchdog timer programming through TOP on
>= SM8450
[ Upstream commit 2f69e54584475ac85ea0e3407c9198ac7c6ea8ad ]
The SM8450 and later chips have DPU_MDP_PERIPH_0_REMOVED feature bit
set, which means that those platforms have dropped some of the
registers, including the WD TIMER-related ones. Stop providing the
callback to program WD timer on those platforms.
Fixes: 100d7ef6995d ("drm/msm/dpu: add support for SM8450")
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/628874/
Link: https://lore.kernel.org/r/20241214-dpu-drop-features-v1-1-988f0662cb7e@linaro.org
Signed-off-by: Abhinav Kumar <quic_abhinavk@quicinc.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c
index 0f40eea7f5e24..2040bee8d512f 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_top.c
@@ -272,7 +272,7 @@ static void _setup_mdp_ops(struct dpu_hw_mdp_ops *ops,
if (cap & BIT(DPU_MDP_VSYNC_SEL))
ops->setup_vsync_source = dpu_hw_setup_vsync_sel;
- else
+ else if (!(cap & BIT(DPU_MDP_PERIPH_0_REMOVED)))
ops->setup_vsync_source = dpu_hw_setup_wd_timer;
ops->get_safe_status = dpu_hw_get_safe_status;
--
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