From: Damon Ding <damon.ding@rock-chips•com>
To: hjc@rock-chips•com, heiko@sntech•de, andy.yan@rock-chips•com,
maarten.lankhorst@linux•intel.com, mripard@kernel•org,
tzimmermann@suse•de, airlied@gmail•com, simona@ffwll•ch,
robh@kernel•org, krzk+dt@kernel•org, conor+dt@kernel•org,
andrzej.hajda@intel•com, neil.armstrong@linaro•org,
rfoss@kernel•org
Cc: Laurent.pinchart@ideasonboard•com, jonas@kwiboo•se,
jernej.skrabec@gmail•com, nicolas.frattaroli@collabora•com,
cristian.ciocaltea@collabora•com,
sebastian.reichel@collabora•com,
dmitry.baryshkov@oss•qualcomm.com, luca.ceresoli@bootlin•com,
dianders@chromium•org, m.szyprowski@samsung•com,
dri-devel@lists•freedesktop.org, devicetree@vger•kernel.org,
linux-arm-kernel@lists•infradead.org,
linux-rockchip@lists•infradead.org, linux-kernel@vger•kernel.org,
Damon Ding <damon.ding@rock-chips•com>
Subject: [PATCH v10 05/11] drm/rockchip: analogix_dp: Enable hclk for RK3588
Date: Mon, 1 Jun 2026 14:50:54 +0800 [thread overview]
Message-ID: <20260601065100.1103873-6-damon.ding@rock-chips.com> (raw)
In-Reply-To: <20260601065100.1103873-1-damon.ding@rock-chips.com>
Acquire and enable the HCLK_VO1 bus clock explicitly for RK3588
eDP controller to guarantee register and datapath access.
The clock was previously enabled implicitly via rockchip,vo-grf
phandle reference, which relies on side effect and is fragile.
Fetch optional "hclk" clock in driver to align with updated device
tree binding and keep consistent with hardware clock dependency.
Fixes: 729f8eefdcad ("drm/rockchip: analogix_dp: Add support for RK3588")
Signed-off-by: Damon Ding <damon.ding@rock-chips•com>
---
Changes in v4:
- Modify the commit msg.
---
drivers/gpu/drm/rockchip/analogix_dp-rockchip.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
index 06072efd7fca..d2af5eb29dbb 100644
--- a/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
+++ b/drivers/gpu/drm/rockchip/analogix_dp-rockchip.c
@@ -311,6 +311,7 @@ static int rockchip_dp_of_probe(struct rockchip_dp_device *dp)
{
struct device *dev = dp->dev;
struct device_node *np = dev->of_node;
+ struct clk *clk;
dp->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
if (IS_ERR(dp->grf))
@@ -327,6 +328,11 @@ static int rockchip_dp_of_probe(struct rockchip_dp_device *dp)
return dev_err_probe(dev, PTR_ERR(dp->pclk),
"failed to get pclk property\n");
+ clk = devm_clk_get_optional_enabled(dev, "hclk");
+ if (IS_ERR(clk))
+ return dev_err_probe(dev, PTR_ERR(clk),
+ "failed to get hclk property\n");
+
dp->rst = devm_reset_control_get(dev, "dp");
if (IS_ERR(dp->rst))
return dev_err_probe(dev, PTR_ERR(dp->rst),
--
2.34.1
next prev parent reply other threads:[~2026-06-01 6:51 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-01 6:50 [PATCH v10 00/11] Add eDP support for RK3576 Damon Ding
2026-06-01 6:50 ` [PATCH v10 01/11] dt-bindings: display: rockchip: analogix-dp: Fix hclk as third clock for RK3588 Damon Ding
2026-06-02 17:01 ` Conor Dooley
2026-06-01 6:50 ` [PATCH v10 02/11] dt-bindings: display: rockchip: analogix-dp: Add per-clock descriptions Damon Ding
2026-06-01 6:50 ` [PATCH v10 03/11] arm64: dts: rockchip: Add missing hclk for RK3588 eDP0 Damon Ding
2026-06-01 6:50 ` [PATCH v10 04/11] arm64: dts: rockchip: Add missing hclk for RK3588 eDP1 Damon Ding
2026-06-01 6:50 ` Damon Ding [this message]
2026-06-01 6:50 ` [PATCH v10 06/11] drm/rockchip: analogix_dp: Fix OF node reference leak via auto cleanup Damon Ding
2026-06-01 6:50 ` [PATCH v10 07/11] dt-bindings: display: rockchip: analogix-dp: Add support for RK3576 Damon Ding
2026-06-01 6:50 ` [PATCH v10 08/11] arm64: dts: rockchip: Add eDP node " Damon Ding
2026-06-01 6:50 ` [PATCH v10 09/11] drm/bridge: analogix_dp: Rename and simplify is_rockchip() Damon Ding
2026-06-01 6:50 ` [PATCH v10 10/11] drm/bridge: analogix_dp: Add support for RK3576 Damon Ding
2026-06-01 6:51 ` [PATCH v10 11/11] drm/rockchip: " Damon Ding
2026-06-02 20:05 ` (subset) [PATCH v10 00/11] Add eDP " Heiko Stuebner
2026-06-02 20:41 ` Heiko Stuebner
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