[PATCH 1/4] dt-bindings: display: panel: Document 10" Raspberry Pi Touch Display 2

[PATCH 1/4] dt-bindings: display: panel: Document 10" Raspberry Pi Touch Display 2

[Marek Vasut]

Document the 10" Raspberry Pi Touch Display 2 MIPI-DSI TFT LCD panel.
The panel is based on the Ilitek ILI79600A controller.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
---
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Dave Stevenson <dave.stevenson@raspberrypi.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Jessica Zhang <jesszhan0024@gmail.com>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: devicetree@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-renesas-soc@vger.kernel.org
---
 .../display/panel/ilitek,ili79600a.yaml       | 65 +++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/panel/ilitek,ili79600a.yaml

diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili79600a.yaml b/Documentation/devicetree/bindings/display/panel/ilitek,ili79600a.yaml
new file mode 100644
index 0000000000000..0a3baffef293e
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/panel/ilitek,ili79600a.yaml
@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/ilitek,ili79600a.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ilitek ILI79600A based MIPI-DSI panels
+
+maintainers:
+  - Dave Stevenson <dave.stevenson@raspberrypi.com>
+  - Marek Vasut <marek.vasut+renesas@mailbox.org>
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - raspberrypi,dsi-10inch
+      - const: ilitek,ili79600a
+
+  reg:
+    maxItems: 1
+    description: DSI virtual channel used by the panel
+
+  enable-gpios:
+    maxItems: 1
+    description: GPIO specifier for the enable pin
+
+  avdd-supply:
+    description: Positive analog voltage supply (AVDD)
+
+  avee-supply:
+    description: Negative analog voltage supply (AVEE)
+
+  pp1800-supply:
+    description: 1.8V logic voltage supply
+
+  pp3300-supply:
+    description: 3.3V logic voltage supply
+
+  backlight: true
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@0 {
+            compatible = "raspberrypi,dsi-10inch", "ilitek,ili79600a";
+            reg = <0>;
+            avdd-supply = <&reg_display>;
+            backlight = <&pwm_bl>;
+        };
+    };
-- 
2.53.0

[PATCH 2/4] drm/panel: ilitek-ili9882t: Make enable GPIO optional

[Marek Vasut]

The enable GPIO may not be accessible on the panel, make it optional.
This is the case on 10" Raspberry Pi Touch Display 2.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
---
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Dave Stevenson <dave.stevenson@raspberrypi.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Jessica Zhang <jesszhan0024@gmail.com>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: devicetree@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-renesas-soc@vger.kernel.org
---
 drivers/gpu/drm/panel/panel-ilitek-ili9882t.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
index 6d07fe901357e..219d048cb883f 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
@@ -787,7 +787,7 @@ static int ili9882t_add(struct ili9882t *ili)
 	if (IS_ERR(ili->pp1800))
 		return PTR_ERR(ili->pp1800);
 
-	ili->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);
+	ili->enable_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW);
 	if (IS_ERR(ili->enable_gpio)) {
 		dev_err(dev, "cannot get enable-gpios %ld\n",
 			PTR_ERR(ili->enable_gpio));
-- 
2.53.0

[PATCH 3/4] drm/panel: ilitek-ili9882t: Set prepare_prev_first

[Marek Vasut]

Sending DSI commands from the prepare() callback requires DSI link to be
up at that point. For DSI hosts is guaranteed only if the panel driver
sets the .prepare_prev_first flag. Set it to let these panels work with
the DSI hosts which don't power on the link in their .mode_set callback.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
---
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Dave Stevenson <dave.stevenson@raspberrypi.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Jessica Zhang <jesszhan0024@gmail.com>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: devicetree@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-renesas-soc@vger.kernel.org
---
 drivers/gpu/drm/panel/panel-ilitek-ili9882t.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
index 219d048cb883f..24e72ad0d29a1 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
@@ -808,6 +808,7 @@ static int ili9882t_add(struct ili9882t *ili)
 
 	ili->base.funcs = &ili9882t_funcs;
 	ili->base.dev = &ili->dsi->dev;
+	ili->base.prepare_prev_first = true;
 
 	drm_panel_add(&ili->base);
 
-- 
2.53.0

[PATCH 4/4] drm/panel: ilitek-ili9882t: Add support for Ilitek ILI79600A-based panels

[Marek Vasut]

The Ilitek ILI79600A display controller is similar to the ILI9882T and can
be supported within the existing `panel-ilitek-ili9882t.c` driver.

This patch extends the ILI9882T driver to handle ILI79600A-based panels,
such as the 10" Raspberry Pi Touch Display 2. The ILI79600A uses a similar
command sequence and initialization flow, with minor differences in power
supply configuration and timing.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
---
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Dave Stevenson <dave.stevenson@raspberrypi.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Jessica Zhang <jesszhan0024@gmail.com>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Neil Armstrong <neil.armstrong@linaro.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Simona Vetter <simona@ffwll.ch>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: devicetree@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: linux-renesas-soc@vger.kernel.org
---
 drivers/gpu/drm/panel/panel-ilitek-ili9882t.c | 231 ++++++++++++++++++
 1 file changed, 231 insertions(+)

diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
index 24e72ad0d29a1..5581100a1f8a5 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
@@ -133,6 +133,207 @@ static const struct drm_dsc_config tianma_il79900a_dsc = {
 	.flatness_min_qp = 3,
 };
 
+static int rpi_10inch_init(struct ili9882t *ili)
+{
+	struct mipi_dsi_multi_context ctx = { .dsi = ili->dsi };
+
+	mipi_dsi_usleep_range(&ctx, 5000, 5100);
+
+	il79900a_switch_page(&ctx, 0x01);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x00, 0x42);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x01, 0x11);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x02, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x03, 0x00);
+
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x04, 0x01);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x05, 0x11);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x06, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x07, 0x00);
+
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x08, 0x80);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x09, 0x01);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x0a, 0x71);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x0c, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x0e, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x0d, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x0f, 0x00);
+
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x30, 0x07);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x31, 0x07);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x32, 0x07);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x33, 0x07);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x34, 0x07);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x35, 0x01);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x36, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x37, 0x28);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x38, 0x29);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x39, 0x11);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x3A, 0x13);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x3B, 0x15);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x3C, 0x17);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x3D, 0x09);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x3E, 0x0D);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x3F, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x40, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x41, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x42, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x43, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x44, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x45, 0x02);
+
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x48, 0x07);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x49, 0x07);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x4A, 0x07);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x4B, 0x07);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x4C, 0x07);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x4D, 0x01);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x4E, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x4F, 0x28);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x50, 0x29);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x51, 0x10);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x52, 0x12);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x53, 0x14);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x54, 0x16);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x55, 0x08);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x56, 0x0C);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x57, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x58, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x59, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x5A, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x5B, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x5C, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x5D, 0x02);
+
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x2C, 0xB0);
+
+	il79900a_switch_page(&ctx, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x07, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x06, 0xD2);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x53, 0x1F);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x5E, 0x40);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x84, 0x00);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x29, 0x3A);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x2A, 0x3B);
+
+	il79900a_switch_page(&ctx, 0x03);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x20, 0x01);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x21, 0x3C);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x22, 0xFA);
+
+	il79900a_switch_page(&ctx, 0x12);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x87, 0x2C);
+
+	il79900a_switch_page(&ctx, 0x05);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x61, 0x8F);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x6D, 0xBB);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x5A, 0x7C);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x67, 0x7C);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x54, 0x92);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x55, 0x92);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x40, 0xD2);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x46, 0x70);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x30, 0x47);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x7A, 0x89);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xA4, 0x0B);
+
+	il79900a_switch_page(&ctx, 0x06);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xC0, 0x80);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xC1, 0x7);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xCA, 0x58);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xCB, 0x2);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xCE, 0x58);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xCF, 0x2);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x10, 0x0);
+
+	il79900a_switch_page(&ctx, 0x0b);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x76, 0x55);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x78, 0x68);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x77, 0x0D);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x79, 0x60);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x7A, 0x10);
+
+	il79900a_switch_page(&ctx, 0x08);
+	mipi_dsi_dcs_write_seq_multi(&ctx,
+				     0xE0, 0x00, 0x1E, 0x3F,
+				     0x68, 0x7D, 0x72, 0x86,
+				     0x89, 0x92, 0x8E, 0xA5,
+				     0xA8, 0xAA, 0xBD, 0xB8,
+				     0xBE, 0xC5, 0xD6, 0xCD,
+				     0xC3, 0xDA, 0xEB, 0xED);
+	mipi_dsi_dcs_write_seq_multi(&ctx,
+				     0xE1, 0x00, 0x1E, 0x3F,
+				     0x68, 0x7D, 0x72, 0x86,
+				     0x89, 0x92, 0x8E, 0xA5,
+				     0xA8, 0xAA, 0xBD, 0xB8,
+				     0xBE, 0xC5, 0xD6, 0xCD,
+				     0xC3, 0xDA, 0xEB, 0xED);
+
+	il79900a_switch_page(&ctx, 0x14);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x85, 0xCC);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x87, 0x91);
+
+	il79900a_switch_page(&ctx, 0x10);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x11, 0x3);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x12, 0x34);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x10, 0x1);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x13, 0x4);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x14, 0xBB);
+
+	il79900a_switch_page(&ctx, 0x0b);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x94, 0x88);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x95, 0x23);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x96, 0x0B);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x97, 0x0B);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x98, 0xC6);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x99, 0xC6);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xA6, 0x47);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xA7, 0x77);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xA8, 0x5);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xA9, 0x5);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xAA, 0xBA);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xAB, 0xBA);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xBD, 0x92);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0xBE, 0xE0);
+
+	il79900a_switch_page(&ctx, 0x0e);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x0, 0x80);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x14, 0x3);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x12, 0x0);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x13, 0x4);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x11, 0x1);
+
+	il79900a_switch_page(&ctx, 0x02);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x80, 0x11);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x82, 0x11);
+	il79900a_switch_page(&ctx, 0x12);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x82, 0x2C);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x85, 0x2C);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x87, 0x2C);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x88, 0xEC);
+	il79900a_switch_page(&ctx, 0x10);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x4, 0x1);
+	il79900a_switch_page(&ctx, 0x11);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x0C, 0x80);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x3C, 0x80);
+
+	il79900a_switch_page(&ctx, 0x06);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x0E, 0x0);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x0E, 0x3F);
+	mipi_dsi_dcs_write_seq_multi(&ctx, 0x10, 0x0);
+
+	il79900a_switch_page(&ctx, 0x00);
+	mipi_dsi_dcs_set_tear_on_multi(&ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
+	mipi_dsi_dcs_exit_sleep_mode_multi(&ctx);
+
+	mipi_dsi_msleep(&ctx, 120);
+
+	mipi_dsi_dcs_set_display_on_multi(&ctx);
+
+	mipi_dsi_msleep(&ctx, 20);
+
+	return ctx.accum_err;
+};
+
 static int starry_ili9882t_init(struct ili9882t *ili)
 {
 	struct mipi_dsi_multi_context ctx = { .dsi = ili->dsi };
@@ -670,6 +871,19 @@ static int ili9882t_enable(struct drm_panel *panel)
 	return 0;
 }
 
+static const struct drm_display_mode rpi_10inch_default_mode = {
+	.clock = 166666,
+	.hdisplay = 1200,
+	.hsync_start = 1200 + 28,
+	.hsync_end = 1200 + 28 + 10,
+	.htotal = 1200 + 28 + 10 + 30,
+	.vdisplay = 1920,
+	.vsync_start = 1920 + 238,
+	.vsync_end = 1920 + 238 + 4,
+	.vtotal = 1920 + 238 + 4 + 28,
+	.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
+};
+
 static const struct drm_display_mode starry_ili9882t_default_mode = {
 	.clock = 165280,
 	.hdisplay = 1200,
@@ -696,6 +910,20 @@ static const struct drm_display_mode tianma_il79900a_default_mode = {
 	.type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED,
 };
 
+static const struct panel_desc rpi_10inch_desc = {
+	.modes = &rpi_10inch_default_mode,
+	.bpc = 8,
+	.size = {
+		.width_mm = 135,
+		.height_mm = 216,
+	},
+	.lanes = 4,
+	.format = MIPI_DSI_FMT_RGB888,
+	.mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
+		      MIPI_DSI_MODE_LPM,
+	.init = rpi_10inch_init,
+};
+
 static const struct panel_desc starry_ili9882t_desc = {
 	.modes = &starry_ili9882t_default_mode,
 	.bpc = 8,
@@ -866,6 +1094,9 @@ static void ili9882t_remove(struct mipi_dsi_device *dsi)
 }
 
 static const struct of_device_id ili9882t_of_match[] = {
+	{ .compatible = "raspberrypi,dsi-10inch",
+	  .data = &rpi_10inch_desc
+	},
 	{ .compatible = "starry,ili9882t",
 	  .data = &starry_ili9882t_desc
 	},
-- 
2.53.0

Re: [PATCH 1/4] dt-bindings: display: panel: Document 10" Raspberry Pi Touch Display 2

[sashiko-bot]

Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [Medium] Incorrect use of `additionalProperties: false` when inheriting from a common schema via `allOf`.
--

--- Patch [1]: [PATCH 1/4] dt-bindings: display: panel: Document 10" Raspberry Pi Touch Display 2 ---
commit 24ac9b0c966cb6294b25fc745f5c098627bda264
Author: Marek Vasut <marek.vasut+renesas@mailbox.org>
Date:   Sun Aug 9 19:58:50 2026 +0000

dt-bindings: display: panel: Document 10" Raspberry Pi Touch Display 2

This commit documents the 10" Raspberry Pi Touch Display 2 MIPI-DSI TFT LCD
panel based on the Ilitek ILI79600A controller.

> diff --git a/Documentation/devicetree/bindings/display/panel/ilitek,ili79600a.yaml b/Documentation/devicetree/bindings/display/panel/ilitek,ili79600a.yaml
> new file mode 100644
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/ilitek,ili79600a.yaml
[ ... ]
> +allOf:
> +  - $ref: panel-common.yaml#
> +
> +properties:
[ ... ]
> +  backlight: true
> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false

[Severity: Medium]
Should this use unevaluatedProperties: false instead?

Because this binding inherits from panel-common.yaml# in the allOf block,
using additionalProperties: false will cause the schema to reject any valid
inherited properties (such as rotation or port) when evaluating a device tree.

Using unevaluatedProperties: false would correctly evaluate the properties
provided by the $ref, which would also allow the redundant local declaration
of backlight: true to be removed.

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260809200107.842945-1-marek.vasut+renesas@mailbox.org?part=1

Re: [PATCH 3/4] drm/panel: ilitek-ili9882t: Set prepare_prev_first

[Neil Armstrong]

On 8/9/26 21:58, Marek Vasut wrote:
> Sending DSI commands from the prepare() callback requires DSI link to be
> up at that point. For DSI hosts is guaranteed only if the panel driver
> sets the .prepare_prev_first flag. Set it to let these panels work with
> the DSI hosts which don't power on the link in their .mode_set callback.
> 
> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
> ---
> Cc: Conor Dooley <conor+dt@kernel.org>
> Cc: Dave Stevenson <dave.stevenson@raspberrypi.com>
> Cc: David Airlie <airlied@gmail.com>
> Cc: Jessica Zhang <jesszhan0024@gmail.com>
> Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
> Cc: Maxime Ripard <mripard@kernel.org>
> Cc: Neil Armstrong <neil.armstrong@linaro.org>
> Cc: Rob Herring <robh@kernel.org>
> Cc: Simona Vetter <simona@ffwll.ch>
> Cc: Thomas Zimmermann <tzimmermann@suse.de>
> Cc: devicetree@vger.kernel.org
> Cc: dri-devel@lists.freedesktop.org
> Cc: linux-renesas-soc@vger.kernel.org
> ---
>   drivers/gpu/drm/panel/panel-ilitek-ili9882t.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
> index 219d048cb883f..24e72ad0d29a1 100644
> --- a/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
> +++ b/drivers/gpu/drm/panel/panel-ilitek-ili9882t.c
> @@ -808,6 +808,7 @@ static int ili9882t_add(struct ili9882t *ili)
>   
>   	ili->base.funcs = &ili9882t_funcs;
>   	ili->base.dev = &ili->dsi->dev;
> +	ili->base.prepare_prev_first = true;
>   
>   	drm_panel_add(&ili->base);
>   

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>

Thanks,
Neil