[PATCH v8 0/4] LVDS Controller Support for SAM9X75 SoC

[PATCH v8 0/4] LVDS Controller Support for SAM9X75 SoC

[Dharma Balasubiramani]

This patch series introduces LVDS controller support for the SAM9X75 SoC. The
LVDS controller is designed to work with Microchip's sam9x7 series
System-on-Chip (SoC) devices, providing Low Voltage Differential Signaling
capabilities.

Patch series Changelog:
- Include configs: at91: Enable LVDS serializer
- include all necessary To/Cc entries.
The Individual Changelogs are available on the respective patches.

Dharma Balasubiramani (4):
  dt-bindings: display: bridge: add sam9x75-lvds binding
  drm/bridge: add lvds controller support for sam9x7
  MAINTAINERS: add SAM9X7 SoC's LVDS controller
  ARM: configs: at91: Enable LVDS serializer support

 .../bridge/microchip,sam9x75-lvds.yaml        |  55 +++++
 MAINTAINERS                                   |   8 +
 arch/arm/configs/at91_dt_defconfig            |   1 +
 drivers/gpu/drm/bridge/Kconfig                |   7 +
 drivers/gpu/drm/bridge/Makefile               |   1 +
 drivers/gpu/drm/bridge/microchip-lvds.c       | 229 ++++++++++++++++++
 6 files changed, 301 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/microchip,sam9x75-lvds.yaml
 create mode 100644 drivers/gpu/drm/bridge/microchip-lvds.c

-- 
2.25.1

[PATCH v8 1/4] dt-bindings: display: bridge: add sam9x75-lvds binding

[Dharma Balasubiramani]

Add the 'sam9x75-lvds' compatible binding, which describes the Low Voltage
Differential Signaling (LVDS) Controller found on some Microchip's sam9x7
series System-on-Chip (SoC) devices. This binding will be used to define
the properties and configuration for the LVDS Controller in DT.

Signed-off-by: Dharma Balasubiramani <dharma.b@microchip.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
Changelog
v7 -> v8
v6 -> v7
v5 -> v6
v4 -> v5
- No changes.
v3 -> v4
- Rephrase the commit subject.
v2 -> v3
- No changes.
v1 -> v2
- Remove '|' in description, as there is no formatting to preserve.
- Remove 'gclk' from clock-names as there is only one clock(pclk).
- Remove the unused headers and include only used ones.
- Change the compatible name specific to SoC (sam9x75) instead of entire series.
- Change file name to match the compatible name.
---
 .../bridge/microchip,sam9x75-lvds.yaml        | 55 +++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/microchip,sam9x75-lvds.yaml

diff --git a/Documentation/devicetree/bindings/display/bridge/microchip,sam9x75-lvds.yaml b/Documentation/devicetree/bindings/display/bridge/microchip,sam9x75-lvds.yaml
new file mode 100644
index 000000000000..862ef441ac9f
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/microchip,sam9x75-lvds.yaml
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/microchip,sam9x75-lvds.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip SAM9X75 LVDS Controller
+
+maintainers:
+  - Dharma Balasubiramani <dharma.b@microchip.com>
+
+description:
+  The Low Voltage Differential Signaling Controller (LVDSC) manages data
+  format conversion from the LCD Controller internal DPI bus to OpenLDI
+  LVDS output signals. LVDSC functions include bit mapping, balanced mode
+  management, and serializer.
+
+properties:
+  compatible:
+    const: microchip,sam9x75-lvds
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: Peripheral Bus Clock
+
+  clock-names:
+    items:
+      - const: pclk
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/clock/at91.h>
+    lvds-controller@f8060000 {
+      compatible = "microchip,sam9x75-lvds";
+      reg = <0xf8060000 0x100>;
+      interrupts = <56 IRQ_TYPE_LEVEL_HIGH 0>;
+      clocks = <&pmc PMC_TYPE_PERIPHERAL 56>;
+      clock-names = "pclk";
+    };
-- 
2.25.1

[PATCH v8 2/4] drm/bridge: add lvds controller support for sam9x7

[Dharma Balasubiramani]

Add a new LVDS controller driver for sam9x7 which does the following:
- Prepares and enables the LVDS Peripheral clock
- Defines its connector type as DRM_MODE_CONNECTOR_LVDS and adds itself
to the global bridge list.
- Identifies its output endpoint as panel and adds it to the encoder
display pipeline
- Enables the LVDS serializer

Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
Signed-off-by: Dharma Balasubiramani <dharma.b@microchip.com>
Acked-by: Hari Prasath Gujulan Elango <hari.prasathge@microchip.com>
---
Changelog
v7 -> v8
- Assign ret variable properly before checking it for err.
v6 -> v7
- Remove setting encoder type from bridge driver.
- Drop clk_disable() from pm_runtime_get_sync() error handling.
- Use devm_clk_get() instead of prepared version.
- Hence use clk_prepare_enable() and clk_disable_unprepare().
- Use devm_drm_of_get_bridge() instead of devm_drm_panel_bridge_add().
- Add error check for devm_pm_runtime_enable().
- Use dev_err() instead of DRM_DEV_ERROR() as it is deprecated.
- Add missing Acked-by tag.
v5 -> v6
- No Changes.
v4 -> v5
- Drop the unused variable 'format'.
- Use DRM wrapper for dev_err() to maintain uniformity.
- return -ENODEV instead of -EINVAL to maintain consistency with other DRM
  bridge drivers.
v3 -> v4
- No changes.
v2 ->v3
- Correct Typo error "serializer".
- Consolidate get() and prepare() functions and use devm_clk_get_prepared().
- Remove unused variable 'ret' in probe().
- Use devm_pm_runtime_enable() and drop the mchp_lvds_remove().
v1 -> v2
- Drop 'res' variable and combine two lines into one.
- Handle deferred probe properly, use dev_err_probe().
- Don't print anything on deferred probe. Dropped print.
- Remove the MODULE_ALIAS and add MODULE_DEVICE_TABLE().
- symbol 'mchp_lvds_driver' was not declared. It should be static.
---
 drivers/gpu/drm/bridge/Kconfig          |   7 +
 drivers/gpu/drm/bridge/Makefile         |   1 +
 drivers/gpu/drm/bridge/microchip-lvds.c | 229 ++++++++++++++++++++++++
 3 files changed, 237 insertions(+)
 create mode 100644 drivers/gpu/drm/bridge/microchip-lvds.c

diff --git a/drivers/gpu/drm/bridge/Kconfig b/drivers/gpu/drm/bridge/Kconfig
index efd996f6c138..889098e2d65f 100644
--- a/drivers/gpu/drm/bridge/Kconfig
+++ b/drivers/gpu/drm/bridge/Kconfig
@@ -190,6 +190,13 @@ config DRM_MEGACHIPS_STDPXXXX_GE_B850V3_FW
 	  to DP++. This is used with the i.MX6 imx-ldb
 	  driver. You are likely to say N here.
 
+config DRM_MICROCHIP_LVDS_SERIALIZER
+	tristate "Microchip LVDS serializer support"
+	depends on OF
+	depends on DRM_ATMEL_HLCDC
+	help
+	  Support for Microchip's LVDS serializer.
+
 config DRM_NWL_MIPI_DSI
 	tristate "Northwest Logic MIPI DSI Host controller"
 	depends on DRM
diff --git a/drivers/gpu/drm/bridge/Makefile b/drivers/gpu/drm/bridge/Makefile
index 017b5832733b..7df87b582dca 100644
--- a/drivers/gpu/drm/bridge/Makefile
+++ b/drivers/gpu/drm/bridge/Makefile
@@ -13,6 +13,7 @@ obj-$(CONFIG_DRM_LONTIUM_LT9611) += lontium-lt9611.o
 obj-$(CONFIG_DRM_LONTIUM_LT9611UXC) += lontium-lt9611uxc.o
 obj-$(CONFIG_DRM_LVDS_CODEC) += lvds-codec.o
 obj-$(CONFIG_DRM_MEGACHIPS_STDPXXXX_GE_B850V3_FW) += megachips-stdpxxxx-ge-b850v3-fw.o
+obj-$(CONFIG_DRM_MICROCHIP_LVDS_SERIALIZER) += microchip-lvds.o
 obj-$(CONFIG_DRM_NXP_PTN3460) += nxp-ptn3460.o
 obj-$(CONFIG_DRM_PARADE_PS8622) += parade-ps8622.o
 obj-$(CONFIG_DRM_PARADE_PS8640) += parade-ps8640.o
diff --git a/drivers/gpu/drm/bridge/microchip-lvds.c b/drivers/gpu/drm/bridge/microchip-lvds.c
new file mode 100644
index 000000000000..b8313dad6072
--- /dev/null
+++ b/drivers/gpu/drm/bridge/microchip-lvds.c
@@ -0,0 +1,229 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2023 Microchip Technology Inc. and its subsidiaries
+ *
+ * Author: Manikandan Muralidharan <manikandan.m@microchip.com>
+ * Author: Dharma Balasubiramani <dharma.b@microchip.com>
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/component.h>
+#include <linux/delay.h>
+#include <linux/jiffies.h>
+#include <linux/mfd/syscon.h>
+#include <linux/of_graph.h>
+#include <linux/pinctrl/devinfo.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+
+#include <drm/drm_atomic_helper.h>
+#include <drm/drm_bridge.h>
+#include <drm/drm_of.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_print.h>
+#include <drm/drm_probe_helper.h>
+#include <drm/drm_simple_kms_helper.h>
+
+#define LVDS_POLL_TIMEOUT_MS 1000
+
+/* LVDSC register offsets */
+#define LVDSC_CR	0x00
+#define LVDSC_CFGR	0x04
+#define LVDSC_SR	0x0C
+#define LVDSC_WPMR	0xE4
+
+/* Bitfields in LVDSC_CR (Control Register) */
+#define LVDSC_CR_SER_EN	BIT(0)
+
+/* Bitfields in LVDSC_CFGR (Configuration Register) */
+#define LVDSC_CFGR_PIXSIZE_24BITS	0
+#define LVDSC_CFGR_DEN_POL_HIGH		0
+#define LVDSC_CFGR_DC_UNBALANCED	0
+#define LVDSC_CFGR_MAPPING_JEIDA	BIT(6)
+
+/*Bitfields in LVDSC_SR */
+#define LVDSC_SR_CS	BIT(0)
+
+/* Bitfields in LVDSC_WPMR (Write Protection Mode Register) */
+#define LVDSC_WPMR_WPKEY_MASK	GENMASK(31, 8)
+#define LVDSC_WPMR_WPKEY_PSSWD	0x4C5644
+
+struct mchp_lvds {
+	struct device *dev;
+	void __iomem *regs;
+	struct clk *pclk;
+	struct drm_panel *panel;
+	struct drm_bridge bridge;
+	struct drm_bridge *panel_bridge;
+};
+
+static inline struct mchp_lvds *bridge_to_lvds(struct drm_bridge *bridge)
+{
+	return container_of(bridge, struct mchp_lvds, bridge);
+}
+
+static inline u32 lvds_readl(struct mchp_lvds *lvds, u32 offset)
+{
+	return readl_relaxed(lvds->regs + offset);
+}
+
+static inline void lvds_writel(struct mchp_lvds *lvds, u32 offset, u32 val)
+{
+	writel_relaxed(val, lvds->regs + offset);
+}
+
+static void lvds_serialiser_on(struct mchp_lvds *lvds)
+{
+	unsigned long timeout = jiffies + msecs_to_jiffies(LVDS_POLL_TIMEOUT_MS);
+
+	/* The LVDSC registers can only be written if WPEN is cleared */
+	lvds_writel(lvds, LVDSC_WPMR, (LVDSC_WPMR_WPKEY_PSSWD &
+				LVDSC_WPMR_WPKEY_MASK));
+
+	/* Wait for the status of configuration registers to be changed */
+	while (lvds_readl(lvds, LVDSC_SR) & LVDSC_SR_CS) {
+		if (time_after(jiffies, timeout)) {
+			dev_err(lvds->dev, "%s: timeout error\n", __func__);
+			return;
+		}
+		usleep_range(1000, 2000);
+	}
+
+	/* Configure the LVDSC */
+	lvds_writel(lvds, LVDSC_CFGR, (LVDSC_CFGR_MAPPING_JEIDA |
+				LVDSC_CFGR_DC_UNBALANCED |
+				LVDSC_CFGR_DEN_POL_HIGH |
+				LVDSC_CFGR_PIXSIZE_24BITS));
+
+	/* Enable the LVDS serializer */
+	lvds_writel(lvds, LVDSC_CR, LVDSC_CR_SER_EN);
+}
+
+static int mchp_lvds_attach(struct drm_bridge *bridge,
+			    enum drm_bridge_attach_flags flags)
+{
+	struct mchp_lvds *lvds = bridge_to_lvds(bridge);
+
+	return drm_bridge_attach(bridge->encoder, lvds->panel_bridge,
+				 bridge, flags);
+}
+
+static void mchp_lvds_enable(struct drm_bridge *bridge)
+{
+	struct mchp_lvds *lvds = bridge_to_lvds(bridge);
+	int ret;
+
+	ret = clk_prepare_enable(lvds->pclk);
+	if (ret < 0) {
+		dev_err(lvds->dev, "failed to enable lvds pclk %d\n", ret);
+		return;
+	}
+
+	ret = pm_runtime_get_sync(lvds->dev);
+	if (ret < 0) {
+		dev_err(lvds->dev, "failed to get pm runtime: %d\n", ret);
+		return;
+	}
+
+	lvds_serialiser_on(lvds);
+}
+
+static void mchp_lvds_disable(struct drm_bridge *bridge)
+{
+	struct mchp_lvds *lvds = bridge_to_lvds(bridge);
+
+	pm_runtime_put(lvds->dev);
+	clk_disable_unprepare(lvds->pclk);
+}
+
+static const struct drm_bridge_funcs mchp_lvds_bridge_funcs = {
+	.attach = mchp_lvds_attach,
+	.enable = mchp_lvds_enable,
+	.disable = mchp_lvds_disable,
+};
+
+static int mchp_lvds_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct mchp_lvds *lvds;
+	struct device_node *port;
+	int ret;
+
+	if (!dev->of_node)
+		return -ENODEV;
+
+	lvds = devm_kzalloc(&pdev->dev, sizeof(*lvds), GFP_KERNEL);
+	if (!lvds)
+		return -ENOMEM;
+
+	lvds->dev = dev;
+
+	lvds->regs = devm_ioremap_resource(lvds->dev,
+			platform_get_resource(pdev, IORESOURCE_MEM, 0));
+	if (IS_ERR(lvds->regs))
+		return PTR_ERR(lvds->regs);
+
+	lvds->pclk = devm_clk_get(lvds->dev, "pclk");
+	if (IS_ERR(lvds->pclk))
+		return dev_err_probe(lvds->dev, PTR_ERR(lvds->pclk),
+				"could not get pclk_lvds\n");
+
+	port = of_graph_get_remote_node(dev->of_node, 1, 0);
+	if (!port) {
+		dev_err(dev,
+			"can't find port point, please init lvds panel port!\n");
+		return -ENODEV;
+	}
+
+	lvds->panel = of_drm_find_panel(port);
+	of_node_put(port);
+
+	if (IS_ERR(lvds->panel))
+		return -EPROBE_DEFER;
+
+	lvds->panel_bridge = devm_drm_of_get_bridge(dev, dev->of_node, 1, 0);
+
+	if (IS_ERR(lvds->panel_bridge))
+		return PTR_ERR(lvds->panel_bridge);
+
+	lvds->bridge.of_node = dev->of_node;
+	lvds->bridge.type = DRM_MODE_CONNECTOR_LVDS;
+	lvds->bridge.funcs = &mchp_lvds_bridge_funcs;
+
+	dev_set_drvdata(dev, lvds);
+	ret = devm_pm_runtime_enable(dev);
+	if (ret < 0) {
+		dev_err(lvds->dev, "failed to enable pm runtime: %d\n", ret);
+		return ret;
+	}
+
+	drm_bridge_add(&lvds->bridge);
+
+	return 0;
+}
+
+static const struct of_device_id mchp_lvds_dt_ids[] = {
+	{
+		.compatible = "microchip,sam9x75-lvds",
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, mchp_lvds_dt_ids);
+
+static struct platform_driver mchp_lvds_driver = {
+	.probe = mchp_lvds_probe,
+	.driver = {
+		   .name = "microchip-lvds",
+		   .of_match_table = mchp_lvds_dt_ids,
+	},
+};
+module_platform_driver(mchp_lvds_driver);
+
+MODULE_AUTHOR("Manikandan Muralidharan <manikandan.m@microchip.com>");
+MODULE_AUTHOR("Dharma Balasubiramani <dharma.b@microchip.com>");
+MODULE_DESCRIPTION("Low Voltage Differential Signaling Controller Driver");
+MODULE_LICENSE("GPL");
-- 
2.25.1

Re: [PATCH v8 2/4] drm/bridge: add lvds controller support for sam9x7

[Dmitry Baryshkov]

On Sun, Apr 21, 2024 at 06:40:48AM +0530, Dharma Balasubiramani wrote:
> Add a new LVDS controller driver for sam9x7 which does the following:
> - Prepares and enables the LVDS Peripheral clock
> - Defines its connector type as DRM_MODE_CONNECTOR_LVDS and adds itself
> to the global bridge list.
> - Identifies its output endpoint as panel and adds it to the encoder
> display pipeline
> - Enables the LVDS serializer
> 
> Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
> Signed-off-by: Dharma Balasubiramani <dharma.b@microchip.com>
> Acked-by: Hari Prasath Gujulan Elango <hari.prasathge@microchip.com>
> ---
> Changelog
> v7 -> v8
> - Assign ret variable properly before checking it for err.
> v6 -> v7
> - Remove setting encoder type from bridge driver.
> - Drop clk_disable() from pm_runtime_get_sync() error handling.
> - Use devm_clk_get() instead of prepared version.
> - Hence use clk_prepare_enable() and clk_disable_unprepare().
> - Use devm_drm_of_get_bridge() instead of devm_drm_panel_bridge_add().
> - Add error check for devm_pm_runtime_enable().
> - Use dev_err() instead of DRM_DEV_ERROR() as it is deprecated.
> - Add missing Acked-by tag.
> v5 -> v6
> - No Changes.
> v4 -> v5
> - Drop the unused variable 'format'.
> - Use DRM wrapper for dev_err() to maintain uniformity.
> - return -ENODEV instead of -EINVAL to maintain consistency with other DRM
>   bridge drivers.
> v3 -> v4
> - No changes.
> v2 ->v3
> - Correct Typo error "serializer".
> - Consolidate get() and prepare() functions and use devm_clk_get_prepared().
> - Remove unused variable 'ret' in probe().
> - Use devm_pm_runtime_enable() and drop the mchp_lvds_remove().
> v1 -> v2
> - Drop 'res' variable and combine two lines into one.
> - Handle deferred probe properly, use dev_err_probe().
> - Don't print anything on deferred probe. Dropped print.
> - Remove the MODULE_ALIAS and add MODULE_DEVICE_TABLE().
> - symbol 'mchp_lvds_driver' was not declared. It should be static.
> ---
>  drivers/gpu/drm/bridge/Kconfig          |   7 +
>  drivers/gpu/drm/bridge/Makefile         |   1 +
>  drivers/gpu/drm/bridge/microchip-lvds.c | 229 ++++++++++++++++++++++++
>  3 files changed, 237 insertions(+)
>  create mode 100644 drivers/gpu/drm/bridge/microchip-lvds.c
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>


-- 
With best wishes
Dmitry

[PATCH v8 3/4] MAINTAINERS: add SAM9X7 SoC's LVDS controller

[Dharma Balasubiramani]

Add the newly added LVDS controller for the SAM9X7 SoC to the existing
MAINTAINERS entry.

Signed-off-by: Dharma Balasubiramani <dharma.b@microchip.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
---
Changelog
v7 -> v8
v6 -> v7
- No changes.
v5 -> v6
- Correct the file name sam9x7-lvds.yaml -> sam9x75-lvds.yaml.
v4 -> v5
v3 -> v4
- No changes.
v2 -> v3
- Move the entry before "MICROCHIP SAMA5D2-COMPATIBLE ADC DRIVER".
v1 -> v2
- No Changes.
---
 MAINTAINERS | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index c23fda1aa1f0..e49347eac596 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14563,6 +14563,14 @@ S:	Supported
 F:	Documentation/devicetree/bindings/pwm/atmel,at91sam-pwm.yaml
 F:	drivers/pwm/pwm-atmel.c
 
+MICROCHIP SAM9x7-COMPATIBLE LVDS CONTROLLER
+M:	Manikandan Muralidharan <manikandan.m@microchip.com>
+M:	Dharma Balasubiramani <dharma.b@microchip.com>
+L:	dri-devel@lists.freedesktop.org
+S:	Supported
+F:	Documentation/devicetree/bindings/display/bridge/microchip,sam9x75-lvds.yaml
+F:	drivers/gpu/drm/bridge/microchip-lvds.c
+
 MICROCHIP SAMA5D2-COMPATIBLE ADC DRIVER
 M:	Eugen Hristev <eugen.hristev@microchip.com>
 L:	linux-iio@vger.kernel.org
-- 
2.25.1

[PATCH v8 4/4] ARM: configs: at91: Enable LVDS serializer support

[Dharma Balasubiramani]

Enable LVDS serializer support for display pipeline.

Signed-off-by: Dharma Balasubiramani <dharma.b@microchip.com>
Acked-by: Hari Prasath Gujulan Elango <hari.prasathge@microchip.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
---
Changelog
v7 -> v8
v6 -> v7
v5 -> v6
v4 -> v5
v3 -> v4
v2 -> v3
- No Changes.
---
 arch/arm/configs/at91_dt_defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/configs/at91_dt_defconfig b/arch/arm/configs/at91_dt_defconfig
index 1d53aec4c836..6eabe2313c9a 100644
--- a/arch/arm/configs/at91_dt_defconfig
+++ b/arch/arm/configs/at91_dt_defconfig
@@ -143,6 +143,7 @@ CONFIG_VIDEO_OV2640=m
 CONFIG_VIDEO_OV7740=m
 CONFIG_DRM=y
 CONFIG_DRM_ATMEL_HLCDC=y
+CONFIG_DRM_MICROCHIP_LVDS_SERIALIZER=y
 CONFIG_DRM_PANEL_SIMPLE=y
 CONFIG_DRM_PANEL_EDP=y
 CONFIG_FB_ATMEL=y
-- 
2.25.1

Re: [PATCH v8 4/4] ARM: configs: at91: Enable LVDS serializer support

[claudiu beznea]

On 21.04.2024 04:10, Dharma Balasubiramani wrote:
> Enable LVDS serializer support for display pipeline.
> 
> Signed-off-by: Dharma Balasubiramani <dharma.b@microchip.com>
> Acked-by: Hari Prasath Gujulan Elango <hari.prasathge@microchip.com>
> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>

Applied to at91-defconfig, thanks!

Re: (subset) [PATCH v8 0/4] LVDS Controller Support for SAM9X75 SoC

[Neil Armstrong]

Hi,

On Sun, 21 Apr 2024 06:40:46 +0530, Dharma Balasubiramani wrote:
> This patch series introduces LVDS controller support for the SAM9X75 SoC. The
> LVDS controller is designed to work with Microchip's sam9x7 series
> System-on-Chip (SoC) devices, providing Low Voltage Differential Signaling
> capabilities.
> 
> Patch series Changelog:
> - Include configs: at91: Enable LVDS serializer
> - include all necessary To/Cc entries.
> The Individual Changelogs are available on the respective patches.
> 
> [...]

Thanks, Applied to https://gitlab.freedesktop.org/drm/misc/kernel.git (drm-misc-next)

[1/4] dt-bindings: display: bridge: add sam9x75-lvds binding
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/c24177ca3b27e5a7ddaab8d330cedecd7eb9244a
[2/4] drm/bridge: add lvds controller support for sam9x7
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/179b0769fc5fc193d7837bdcb6ddee118a0fa9b8
[3/4] MAINTAINERS: add SAM9X7 SoC's LVDS controller
      https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/e95752752eaf06c860811ac5ddf9badf6c1b43ca

-- 
Neil