In case an upstream bridge modified the required clock frequency in its .atomic_check callback by setting adjusted_mode.clock , make sure that clock frequency is generated by the LCDIFv3 block.
This is useful e.g. when LCDIFv3 feeds DSIM which feeds TC358767 with (e)DP output, where the TC358767 expects precise timing on its input side, the precise timing must be generated by the LCDIF. Signed-off-by: Marek Vasut <[email protected]> --- Cc: Daniel Vetter <[email protected]> Cc: David Airlie <[email protected]> Cc: Fabio Estevam <[email protected]> Cc: Lucas Stach <[email protected]> Cc: Lukas F. Hartmann <[email protected]> Cc: Maarten Lankhorst <[email protected]> Cc: Maxime Ripard <[email protected]> Cc: Pengutronix Kernel Team <[email protected]> Cc: Sascha Hauer <[email protected]> Cc: Shawn Guo <[email protected]> Cc: Stefan Agner <[email protected]> Cc: Thomas Zimmermann <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] --- drivers/gpu/drm/mxsfb/lcdif_kms.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/mxsfb/lcdif_kms.c b/drivers/gpu/drm/mxsfb/lcdif_kms.c index 2541d2de4e45f..dbd42cc1da87f 100644 --- a/drivers/gpu/drm/mxsfb/lcdif_kms.c +++ b/drivers/gpu/drm/mxsfb/lcdif_kms.c @@ -407,8 +407,7 @@ static void lcdif_crtc_mode_set_nofb(struct drm_crtc_state *crtc_state, struct drm_display_mode *m = &crtc_state->adjusted_mode; DRM_DEV_DEBUG_DRIVER(drm->dev, "Pixel clock: %dkHz (actual: %dkHz)\n", - m->crtc_clock, - (int)(clk_get_rate(lcdif->clk) / 1000)); + m->clock, (int)(clk_get_rate(lcdif->clk) / 1000)); DRM_DEV_DEBUG_DRIVER(drm->dev, "Bridge bus_flags: 0x%08X\n", lcdif_crtc_state->bus_flags); DRM_DEV_DEBUG_DRIVER(drm->dev, "Mode flags: 0x%08X\n", m->flags); @@ -538,7 +537,7 @@ static void lcdif_crtc_atomic_enable(struct drm_crtc *crtc, struct drm_device *drm = lcdif->drm; dma_addr_t paddr; - clk_set_rate(lcdif->clk, m->crtc_clock * 1000); + clk_set_rate(lcdif->clk, m->clock * 1000); pm_runtime_get_sync(drm->dev); -- 2.43.0
