Linux kernel and device drivers for NXP i.MX platforms
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From: Liu Ying <victor.liu@nxp.com>
To: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-media@vger.kernel.org,
	imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org
Cc: andrzej.hajda@intel.com, neil.armstrong@linaro.org,
	rfoss@kernel.org, Laurent.pinchart@ideasonboard.com,
	jonas@kwiboo.se, jernej.skrabec@gmail.com, airlied@gmail.com,
	simona@ffwll.ch, maarten.lankhorst@linux.intel.com,
	mripard@kernel.org, tzimmermann@suse.de, robh@kernel.org,
	krzk+dt@kernel.org, conor+dt@kernel.org,
	quic_jesszhan@quicinc.com, mchehab@kernel.org,
	shawnguo@kernel.org, s.hauer@pengutronix.de,
	kernel@pengutronix.de, festevam@gmail.com,
	catalin.marinas@arm.com, will@kernel.org,
	sakari.ailus@linux.intel.com, hverkuil@xs4all.nl,
	tomi.valkeinen@ideasonboard.com, quic_bjorande@quicinc.com,
	geert+renesas@glider.be, dmitry.baryshkov@linaro.org,
	arnd@arndb.de, nfraprado@collabora.com, thierry.reding@gmail.com,
	prabhakar.mahadev-lad.rj@bp.renesas.com, sam@ravnborg.org,
	marex@denx.de, biju.das.jz@bp.renesas.com
Subject: [PATCH v3 01/15] arm64: dts: imx8mp-skov-revb-mi1010ait-1cp1: Set "media_disp2_pix" clock rate to 70MHz
Date: Mon, 21 Oct 2024 14:44:32 +0800	[thread overview]
Message-ID: <20241021064446.263619-2-victor.liu@nxp.com> (raw)
In-Reply-To: <20241021064446.263619-1-victor.liu@nxp.com>

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>
---
v3:
* New patch.

 .../dts/freescale/imx8mp-skov-revb-mi1010ait-1cp1.dts     | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

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 30962922b361..2c75da5f064f 100644
--- 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 @@ &lcdif2 {
 
 &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 @@ &media_blk_ctrl {
 	 */
 	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 {
-- 
2.34.1


  reply	other threads:[~2024-10-21  6:45 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-10-21  6:44 [PATCH v3 00/15] Add ITE IT6263 LVDS to HDMI converter support Liu Ying
2024-10-21  6:44 ` Liu Ying [this message]
2024-10-21  6:44 ` [PATCH v3 02/15] drm/bridge: fsl-ldb: Get the next non-panel bridge Liu Ying
2024-10-21  6:44 ` [PATCH v3 03/15] drm/bridge: fsl-ldb: Use clk_round_rate() to validate "ldb" clock rate Liu Ying
2024-10-21  6:44 ` [PATCH v3 04/15] media: uapi: Add MEDIA_BUS_FMT_RGB101010_1X7X5_{SPWG,JEIDA} Liu Ying
2024-10-21  6:44 ` [PATCH v3 05/15] drm: of: Get MEDIA_BUS_FMT_RGB101010_1X7X5_{JEIDA,SPWG} LVDS data mappings Liu Ying
2024-10-21 11:17   ` Dmitry Baryshkov
2024-10-21  6:44 ` [PATCH v3 06/15] drm: of: Add drm_of_lvds_get_dual_link_pixel_order_sink() Liu Ying
2024-10-21 12:15   ` Dmitry Baryshkov
2024-10-21  6:44 ` [PATCH v3 07/15] dt-bindings: display: lvds-data-mapping: Add 30-bit RGB pixel data mappings Liu Ying
2024-10-21  7:39   ` Krzysztof Kozlowski
2024-10-21  6:44 ` [PATCH v3 08/15] dt-bindings: display: Document dual-link LVDS display common properties Liu Ying
2024-10-21  7:42   ` Krzysztof Kozlowski
2024-10-21  8:19     ` Liu Ying
2024-10-21 19:32       ` Rob Herring
2024-10-21  6:44 ` [PATCH v3 09/15] dt-bindings: display: panel-simple-lvds-dual-ports: Reference lvds-dual-ports.yaml Liu Ying
2024-10-21  7:43   ` Krzysztof Kozlowski
2024-10-21  8:23     ` Liu Ying
2024-10-21 11:06     ` Dmitry Baryshkov
2024-10-21 19:43     ` Rob Herring
2024-10-21 19:40   ` Rob Herring
2024-10-22  7:42     ` Liu Ying
2024-10-21  6:44 ` [PATCH v3 10/15] dt-bindings: display: advantech,idk-2121wr: " Liu Ying
2024-10-21  6:44 ` [PATCH v3 11/15] dt-bindings: display: bridge: Add ITE IT6263 LVDS to HDMI converter Liu Ying
2024-10-21  6:44 ` [PATCH v3 12/15] drm/bridge: " Liu Ying
2024-10-21 10:12   ` Biju Das
2024-10-22  7:30     ` Liu Ying
2024-10-21 12:38   ` Maxime Ripard
2024-10-22  7:36     ` Liu Ying
2024-10-22  7:53       ` Maxime Ripard
2024-10-22  8:10         ` Liu Ying
2024-10-22  8:15           ` Maxime Ripard
2024-10-24 15:10   ` Biju Das
2024-10-25  8:24     ` Liu Ying
2024-10-25  8:57       ` Biju Das
2024-10-21  6:44 ` [PATCH v3 13/15] arm64: dts: imx8mp-evk: Add NXP LVDS to HDMI adapter cards Liu Ying
2024-10-21  6:44 ` [PATCH v3 14/15] arm64: defconfig: Enable ITE IT6263 driver Liu Ying
2024-10-21  6:44 ` [PATCH v3 15/15] MAINTAINERS: Add maintainer for " Liu Ying

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