arm64: dts: imx8mp-skov-revb-mi1010ait-1cp1: Set "media_disp2_pix" clock rate to...

The LVDS panel "multi-inno,mi1010ait-1cp" used on this platform has
a typical pixel clock rate of 70MHz.  Set "media_disp2_pix" clock rate
to that rate, instead of the original 68.9MHz.  The LVDS serial clock
is controlled by "media_ldb" clock.  It should run at 490MHz(7-fold the
pixel clock rate due to single LVDS link).  Set "video_pll1" clock rate
and "media_ldb" to 490MHz to achieve that.

This should be able to suppress this LDB driver warning:
[   17.206644] fsl-ldb 32ec0000.blk-ctrl:bridge@5c: Configured LDB clock (70000000 Hz) does not match requested LVDS clock: 490000000 Hz

This also makes the display mode used by the panel pass mode validation
against pixel clock rate and "media_ldb" clock rate in a certain display
driver.

Signed-off-by: Liu Ying <victor.liu@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-skov-revb-mi1010ait-1cp1.dts b/arch/arm64/boot/dts/freescale/imx8mp-skov-revb-mi1010ait-1cp1.dts
index 30962922b361c9d05887722769c7585eb85b44a0..2c75da5f064f2b0cd97f5040febac13c4adc020b 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mp-skov-revb-mi1010ait-1cp1.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-skov-revb-mi1010ait-1cp1.dts
@@ -52,7 +52,7 @@
 
 &lvds_bridge {
        /* IMX8MP_CLK_MEDIA_LDB = IMX8MP_CLK_MEDIA_DISP2_PIX * 7 */
-       assigned-clock-rates = <482300000>;
+       assigned-clock-rates = <490000000>;
        status = "okay";
 
        ports {
@@ -70,10 +70,10 @@
         */
        assigned-clock-rates = <500000000>, <200000000>, <0>,
                /* IMX8MP_CLK_MEDIA_DISP2_PIX = pixelclk of lvds panel */
-               <68900000>,
+               <70000000>,
                <500000000>,
-               /* IMX8MP_VIDEO_PLL1 = IMX8MP_CLK_MEDIA_LDB * 2 */
-               <964600000>;
+               /* IMX8MP_VIDEO_PLL1 = IMX8MP_CLK_MEDIA_LDB */
+               <490000000>;
 };
 
 &pwm4 {