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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org On Mon, 2025-04-07 at 21:31 +0800, Bincai Liu wrote: > This power is new added in MT8196. So runtime PM is enable > to turn off dsi power to reduce power consumption. I think you should describe why old SoC is not necessary to do this. I guess that DSI and display pipeline share the same power in old SoC, so DSI could not turn off the common power in old SoC. Regards, CK > > Signed-off-by: Bincai Liu > --- > drivers/gpu/drm/mediatek/mtk_dsi.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/gpu/drm/mediatek/mtk_dsi.c b/drivers/gpu/drm/mediatek/mtk_dsi.c > index b1467d6bed06..21cfba1f9b89 100644 > --- a/drivers/gpu/drm/mediatek/mtk_dsi.c > +++ b/drivers/gpu/drm/mediatek/mtk_dsi.c > @@ -12,6 +12,7 @@ > #include > #include > #include > +#include > #include > #include > > @@ -715,6 +716,7 @@ static int mtk_dsi_poweron(struct mtk_dsi *dsi) > dsi->data_rate = DIV_ROUND_UP_ULL(dsi->vm.pixelclock * bit_per_pixel, > dsi->lanes); > > + pm_runtime_get_sync(dsi->host.dev); > ret = clk_set_rate(dsi->hs_clk, dsi->data_rate); > if (ret < 0) { > dev_err(dev, "Failed to set data rate: %d\n", ret); > @@ -789,6 +791,7 @@ static void mtk_dsi_poweroff(struct mtk_dsi *dsi) > clk_disable_unprepare(dsi->digital_clk); > > phy_power_off(dsi->phy); > + pm_runtime_put_sync(dsi->host.dev); > > dsi->lanes_ready = false; > } > @@ -1272,6 +1275,7 @@ static int mtk_dsi_probe(struct platform_device *pdev) > dsi->bridge.funcs = &mtk_dsi_bridge_funcs; > dsi->bridge.of_node = dev->of_node; > dsi->bridge.type = DRM_MODE_CONNECTOR_DSI; > + pm_runtime_enable(dev); > > return 0; > } > @@ -1282,6 +1286,7 @@ static void mtk_dsi_remove(struct platform_device *pdev) > > mtk_output_dsi_disable(dsi); > mipi_dsi_host_unregister(&dsi->host); > + pm_runtime_disable(&pdev->dev); > } > > static const struct mtk_dsi_driver_data mt8173_dsi_driver_data = { -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy