On 30/06/2023 20:10, George Stark wrote:
Hello Neil On 6/30/23 19:29, Neil Armstrong wrote:Disable the px_clk when setting the rate to recover a fully configured and correctly reset VCLK clock tree after the rate is set. Fixes: 77d9e1e6b846 ("drm/meson: add support for MIPI-DSI transceiver") Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx> --- drivers/gpu/drm/meson/meson_dw_mipi_dsi.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/gpu/drm/meson/meson_dw_mipi_dsi.c b/drivers/gpu/drm/meson/meson_dw_mipi_dsi.c index 57447abf1a29..dc63d2d813a9 100644 --- a/drivers/gpu/drm/meson/meson_dw_mipi_dsi.c +++ b/drivers/gpu/drm/meson/meson_dw_mipi_dsi.c @@ -94,6 +94,7 @@ static int dw_mipi_dsi_phy_init(void *priv_data) return ret; } + clk_disable_unprepare(mipi_dsi->px_clk); ret = clk_set_rate(mipi_dsi->px_clk, mipi_dsi->mode->clock * 1000); if (ret) { @@ -102,6 +103,12 @@ static int dw_mipi_dsi_phy_init(void *priv_data) return ret; } + clk_prepare_enable(mipi_dsi->px_clk);probably should be: ret = clk_prepare_enable(mipi_dsi->px_clk);
Indeed, thx for noticing :-)
+ if (ret) { + dev_err(mipi_dsi->dev, "Failed to enable DSI Pixel clock (ret %d)\n", ret); + return ret; + } + switch (mipi_dsi->dsi_device->format) { case MIPI_DSI_FMT_RGB888: dpi_data_format = DPI_COLOR_24BIT;
