* [PATCH] drm/rockchip: dw-mipi-dsi-rockchip: Fix ISP1 PHY initialization
@ 2026-07-25 12:00 Ondřej Jirman
0 siblings, 0 replies; only message in thread
From: Ondřej Jirman @ 2026-07-25 12:00 UTC (permalink / raw)
To: linux-rockchip
Cc: linux-kernel, Ondrej Jirman, Sandy Huang, Heiko Stübner,
Andy Yan, Maarten Lankhorst, Maxime Ripard, Thomas Zimmermann,
David Airlie, Simona Vetter, open list:DRM DRIVERS FOR ROCKCHIP,
moderated list:ARM/Rockchip SoC support
From: Ondrej Jirman <megi@xff.cz>
After suspend/resume cycle, ISP1 would stop receiving data.
Re-initializing DPHY during PHY power on fixes the issue.
Signed-off-by: Ondrej Jirman <megi@xff.cz>
---
drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
index 3547d91b25d3..10d84bdda8cd 100644
--- a/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi-rockchip.c
@@ -1255,6 +1255,14 @@ static int dw_mipi_dsi_dphy_power_on(struct phy *phy)
goto err_phy_cfg_clk;
}
+ if (dsi->cdata->dphy_rx_init) {
+ ret = dsi->cdata->dphy_rx_init(phy);
+ if (ret < 0) {
+ DRM_DEV_ERROR(dsi->dev, "hardware-specific phy init failed: %d\n", ret);
+ goto err_pwr_on;
+ }
+ }
+
/* do soc-variant specific init */
if (dsi->cdata->dphy_rx_power_on) {
ret = dsi->cdata->dphy_rx_power_on(phy);
--
2.54.0
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2026-07-25 12:00 [PATCH] drm/rockchip: dw-mipi-dsi-rockchip: Fix ISP1 PHY initialization Ondřej Jirman
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