[PATCH] drm: lcdif: Use adjusted_mode .clock instead of .crtc_clock

[Marek Vasut]

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 <marex at denx.de>
---
Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: David Airlie <airlied at gmail.com>
Cc: Fabio Estevam <festevam at gmail.com>
Cc: Lucas Stach <l.stach at pengutronix.de>
Cc: Lukas F. Hartmann <lukas at mntmn.com>
Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
Cc: Maxime Ripard <mripard at kernel.org>
Cc: Pengutronix Kernel Team <kernel at pengutronix.de>
Cc: Sascha Hauer <s.hauer at pengutronix.de>
Cc: Shawn Guo <shawnguo at kernel.org>
Cc: Stefan Agner <stefan at agner.ch>
Cc: Thomas Zimmermann <tzimmermann at suse.de>
Cc: dri-devel at lists.freedesktop.org
Cc: imx at lists.linux.dev
Cc: kernel at dh-electronics.com
Cc: linux-arm-kernel at lists.infradead.org
---
 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