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| author | Neil Armstrong <neil.armstrong@linaro.org> | 2024-04-03 09:46:35 +0200 |
|---|---|---|
| committer | Neil Armstrong <neil.armstrong@linaro.org> | 2024-04-22 18:54:24 +0200 |
| commit | 5c9837374ecf55a1fa3b7622d365a0456960270f (patch) | |
| tree | 48909c49edc3dfcc78d5dd23a3145ed2d1509741 | |
| parent | 105aa4c65b76c3a344ca89a2d2dc96c84cca557f (diff) | |
| download | renesas-drivers-5c9837374ecf55a1fa3b7622d365a0456960270f.tar.gz | |
drm/meson: gate px_clk when setting rate
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")
Reviewed-by: Nicolas Belin <nbelin@baylibre.com>
Link: https://lore.kernel.org/r/20240403-amlogic-v6-4-upstream-dsi-ccf-vim3-v12-4-99ecdfdc87fc@linaro.org
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240403-amlogic-v6-4-upstream-dsi-ccf-vim3-v12-4-99ecdfdc87fc@linaro.org
| -rw-r--r-- | drivers/gpu/drm/meson/meson_dw_mipi_dsi.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/meson/meson_dw_mipi_dsi.c b/drivers/gpu/drm/meson/meson_dw_mipi_dsi.c index a6bc1bdb3d0d84..a10cff3ca1fef2 100644 --- a/drivers/gpu/drm/meson/meson_dw_mipi_dsi.c +++ b/drivers/gpu/drm/meson/meson_dw_mipi_dsi.c @@ -95,6 +95,7 @@ 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) { @@ -103,6 +104,12 @@ static int dw_mipi_dsi_phy_init(void *priv_data) return ret; } + ret = clk_prepare_enable(mipi_dsi->px_clk); + 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; |