Add Anbernic RG Vita-Pro

From: Chris Morgan <[email protected]>

Document the SG Micro sgm41542 battery charger/boost converter. The parameters of input-current-limit-microamp and input-voltage-limit-microvolt are defined as such since they are in common use among multiple bindings currently.

Signed-off-by Chris Morgan <[email protected]>

---
 .../power/supply/sgmicro,sgm41542.yaml        | 104 ++++++++++++++++++
 1 file changed, 104 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/power/supply/sgmicro,sgm41542.yaml

Documentation/devicetree/bindings/power/supply/sgmicro,sgm41542.yaml new file +19 -0

new file mode 100644
index 000000000000..a97afea83700
@@ -0,0 +1,104 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/power/supply/sgmicro,sgm41542.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: SGM41542 Battery Charger
+
+description:
+  The SGMicro SGM41542 is a single cell battery charger/boost controller.
+
+maintainers:
+  - Chris Morgan <[email protected]>
+  - Xu Shengfei <[email protected]>
+
+allOf:
+  - $ref: power-supply.yaml#
+
+properties:

Documentation/devicetree/bindings/power/supply/sgmicro,sgm41542.yaml new file +58 -0

+        constant-charge-current-max-microamp
+        constant-charge-voltage-max-microvolt
+        charge-term-current-microamp
+        precharge-current-microamp
+
+  reg:
+    maxItems: 1
+
+  regulators:
+    type: object
+    properties:
+      otg-vbus:
+        type: object
+        description: OTG boost regulator
+        $ref: /schemas/regulator/regulator.yaml
+        unevaluatedProperties: false
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    battery: battery {
+      compatible = "simple-battery";
+      constant-charge-current-max-microamp = <10000000>;
+      constant-charge-voltage-max-microvolt = <4350000>;
+      precharge-current-microamp = <180000>;
+      charge-term-current-microamp = <300000>;
+    };
+
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      charger@3b {
+        compatible = "sgmicro,sgm41542";
+        reg = <0x3b>;
+        input-current-limit-microamp = <3000000>;
+        input-voltage-limit-microvolt = <4500000>;
+        interrupt-parent = <&gpio0>;
+        interrupts = <26 IRQ_TYPE_EDGE_FALLING>;
+        monitored-battery = <&battery>;
+
+        regulators {
+          otg-vbus {
+            regulator-max-microvolt = <5000000>;
+            regulator-min-microvolt = <5000000>;
+          };
+        };
+      };
+    };

Signature · 1 line

2.43.0

From: Chris Morgan <[email protected]>

The panel used by Anbernic in the RG Vita-Pro is a DSI panel based on the TD4310 controller IC. It measures approximately 5.5 inches diagonally and is 1080x1920 in resolution.

Signed-off-by Chris Morgan <[email protected]>

---
 .../display/panel/anbernic,td4310.yaml        | 66 +++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/panel/anbernic,td4310.yaml

Documentation/devicetree/bindings/display/panel/anbernic,td4310.yaml new file +49 -0

new file mode 100644
index 000000000000..6f7f92b9c860
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/panel/anbernic,td4310.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Anbernic TD4310 Based Panels
+
+maintainers:
+  - Chris Morgan <[email protected]>
+
+description:
+  Anbernic TD4310 Based Panels, such as the RG-Vita-Pro panel
+  (a 1080x1920 5.5 inch panel).
+
+allOf:
+  - $ref: panel-common.yaml#
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - anbernic,panel-vita-pro
+      - const: anbernic,td4310
+
+  reg:
+    maxItems: 1
+
+  vdd-supply:
+    description: Panel power supply
+
+required:
+  - compatible
+  - port
+  - reg
+  - reset-gpios
+  - vdd-supply
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    dsi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        panel@0 {

Documentation/devicetree/bindings/display/panel/anbernic,td4310.yaml new file +7 -0

+                    remote-endpoint = <&dsi_out>;
+                };
+            };
+        };
+    };
+
+...

Signature · 1 line

2.43.0

From: Chris Morgan <[email protected]>

The panel used by Anbernic in the RG Vita-Pro is a DSI panel based on the TD4310 controller IC. It measures approximately 5.5 inches diagonally and is 1080x1920 in resolution.

Signed-off-by Chris Morgan <[email protected]>

---
  drivers/gpu/drm/panel/Kconfig                 |  10 +
  drivers/gpu/drm/panel/Makefile                |   1 +
  drivers/gpu/drm/panel/panel-anbernic-td4310.c | 256 ++++++++++++++++++
  3 files changed, 267 insertions(+)

create mode 100644 drivers/gpu/drm/panel/panel-anbernic-td4310.c

drivers/gpu/drm/panel/Kconfig +10 -0

index d592f4f4b939..61dd00297ecc 100644
@@ -17,6 +17,16 @@ config DRM_PANEL_ABT_Y030XX067A
  	  Y030XX067A 320x480 3.0" panel as found in the YLM RG-280M, RG-300
  	  and RG-99 handheld gaming consoles.
 
+config DRM_PANEL_ANBERNIC_TD4310
+	tristate "Anbernic TD4310 LCD panel"
+	depends on GPIOLIB && OF
+	depends on DRM_MIPI_DSI
+	depends on BACKLIGHT_CLASS_DEVICE
+	help
+	  Say Y here to enable support for Anbernic designed panels with the
+	  TD4310 panel controller such as the ones used on the Anbernic RG
+	  Vita Pro.
+
  config DRM_PANEL_ARM_VERSATILE
  	tristate "ARM Versatile panel driver"
  	depends on OF

drivers/gpu/drm/panel/Makefile +1 -0

index a4291dc3905b..9d8f70c9de3e 100644
@@ -1,5 +1,6 @@
  # SPDX-License-Identifier: GPL-2.0
  obj-$(CONFIG_DRM_PANEL_ABT_Y030XX067A) += panel-abt-y030xx067a.o
+obj-$(CONFIG_DRM_PANEL_ANBERNIC_TD4310) += panel-anbernic-td4310.o
  obj-$(CONFIG_DRM_PANEL_ARM_VERSATILE) += panel-arm-versatile.o
  obj-$(CONFIG_DRM_PANEL_ASUS_Z00T_TM5P5_NT35596) += panel-asus-z00t-tm5p5-n35596.o
  obj-$(CONFIG_DRM_PANEL_AUO_A030JTN01) += panel-auo-a030jtn01.o

drivers/gpu/drm/panel/panel-anbernic-td4310.c new file +246 -0

new file mode 100644
index 000000000000..84963671e3f9
@@ -0,0 +1,256 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for Anbernic panels with TD4310 panel controller.
+ *
+ * Copyright (C) 2026 Chris Morgan <[email protected]>
+ *
+ */
+
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regulator/consumer.h>
+
+#include <drm/drm_mipi_dsi.h>
+#include <drm/drm_panel.h>
+#include <drm/drm_probe_helper.h>
+
+#include <video/mipi_display.h>
+
+struct anbernic_panel_td4310_info {
+	const struct drm_display_mode *display_mode;
+	u16 width_mm;
+	u16 height_mm;
+	u32 bus_flags;
+	unsigned long mode_flags;
+	u32 format;
+	u32 lanes;
+	u16 prepare_delay;
+	u16 reset_delay;
+	u16 init_delay;
+	u16 enable_delay;
+	u16 disable_delay;
+	u16 unprepare_delay;
+};
+
+struct anbernic_panel_td4310 {
+	struct device *dev;
+	struct mipi_dsi_device *dsi;
+	struct drm_panel panel;
+	const struct anbernic_panel_td4310_info *panel_info;
+	struct gpio_desc *reset_gpio;
+	struct gpio_desc *enable_gpio;
+	struct regulator *vdd;
+	enum drm_panel_orientation orientation;
+};
+
+static inline struct anbernic_panel_td4310 *panel_to_anbernic_panel_td4310(struct drm_panel *panel)
+{
+	return container_of(panel, struct anbernic_panel_td4310, panel);
+}
+
+static int panel_anbernic_td4310_prepare(struct drm_panel *panel)
+{
+	struct anbernic_panel_td4310 *ctx = panel_to_anbernic_panel_td4310(panel);
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
+	int ret;
+
+	ret = regulator_enable(ctx->vdd);
+	if (ret)
+		return ret;
+
+	ret = gpiod_set_value_cansleep(ctx->enable_gpio, 1);
+	if (ret)
+		goto err_enable;
+
+	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+	mipi_dsi_msleep(&dsi_ctx, 10);
+
+	ret = gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+	if (ret)
+		goto err_reset;
+	if (ctx->panel_info->reset_delay)
+		mipi_dsi_msleep(&dsi_ctx, ctx->panel_info->reset_delay);
+	ret = gpiod_set_value_cansleep(ctx->reset_gpio, 0);
+	if (ret)
+		goto err_reset;
+
+	if (ctx->panel_info->enable_delay)
+		mipi_dsi_msleep(&dsi_ctx, ctx->panel_info->enable_delay);
+
+	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, ctx->panel_info->prepare_delay);
+	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, ctx->panel_info->prepare_delay);
+
+	if (dsi_ctx.accum_err) {
+		ret = dsi_ctx.accum_err;
+		goto err_reset;
+	}
+
+	return 0;
+
+err_reset:
+	gpiod_set_value_cansleep(ctx->enable_gpio, 0);
+err_enable:
+	regulator_disable(ctx->vdd);
+	return ret;
+}
+
+static int panel_anbernic_td4310_unprepare(struct drm_panel *panel)
+{
+	struct anbernic_panel_td4310 *ctx = panel_to_anbernic_panel_td4310(panel);
+	struct mipi_dsi_device *dsi = ctx->dsi;
+	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
+
+	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, ctx->panel_info->unprepare_delay);
+	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
+	mipi_dsi_msleep(&dsi_ctx, ctx->panel_info->disable_delay);
+
+	gpiod_set_value_cansleep(ctx->enable_gpio, 0);
+
+	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
+
+	regulator_disable(ctx->vdd);
+
+	return 0;
+}
+
+static int panel_anbernic_td4310_get_mode(struct drm_panel *panel,
+				    struct drm_connector *connector)
+{
+	struct anbernic_panel_td4310 *ctx = panel_to_anbernic_panel_td4310(panel);
+	const struct anbernic_panel_td4310_info *panel_info = ctx->panel_info;
+
+	connector->display_info.bpc = 8;
+	connector->display_info.width_mm = panel_info->width_mm;
+	connector->display_info.height_mm = panel_info->height_mm;
+	connector->display_info.bus_flags = panel_info->bus_flags;
+
+	return drm_connector_helper_get_modes_fixed(connector, panel_info->display_mode);
+}
+
+static enum drm_panel_orientation panel_anbernic_td4310_get_orientation(struct drm_panel *panel)
+{
+	struct anbernic_panel_td4310 *ctx = panel_to_anbernic_panel_td4310(panel);
+
+	return ctx->orientation;
+}
+
+static const struct drm_panel_funcs panel_anbernic_td4310_funcs = {
+	.prepare = panel_anbernic_td4310_prepare,
+	.unprepare = panel_anbernic_td4310_unprepare,
+	.get_modes = panel_anbernic_td4310_get_mode,
+	.get_orientation = panel_anbernic_td4310_get_orientation,
+};
+
+static int panel_anbernic_td4310_probe(struct mipi_dsi_device *dsi)
+{
+	struct device *dev = &dsi->dev;
+	struct anbernic_panel_td4310 *ctx;
+	int ret;
+
+	ctx = devm_drm_panel_alloc(dev, struct anbernic_panel_td4310, panel,
+				   &panel_anbernic_td4310_funcs,
+				   DRM_MODE_CONNECTOR_DSI);
+	if (IS_ERR(ctx))
+		return PTR_ERR(ctx);
+
+	ctx->dev = dev;
+
+	ctx->panel_info = of_device_get_match_data(dev);
+	if (!ctx->panel_info)
+		return -EINVAL;
+
+	ret = of_drm_get_panel_orientation(dev->of_node, &ctx->orientation);
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "Failed to get panel orientation\n");
+
+	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(ctx->reset_gpio))
+		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
+				     "Cannot get reset gpio\n");
+
+	ctx->enable_gpio = devm_gpiod_get_optional(dev, "enable", GPIOD_OUT_LOW);
+	if (IS_ERR(ctx->enable_gpio))
+		return dev_err_probe(dev, PTR_ERR(ctx->enable_gpio),
+				     "Cannot get enable gpio\n");
+
+	ctx->vdd = devm_regulator_get(dev, "vdd");
+	if (IS_ERR(ctx->vdd))
+		return dev_err_probe(dev, PTR_ERR(ctx->vdd),
+				     "Failed to request vdd regulator\n");
+
+	ctx->dsi = dsi;
+	mipi_dsi_set_drvdata(dsi, ctx);
+
+	dsi->lanes = ctx->panel_info->lanes;
+	dsi->format = ctx->panel_info->format;
+	dsi->mode_flags = ctx->panel_info->mode_flags;
+
+	ret = drm_panel_of_backlight(&ctx->panel);
+	if (ret)
+		return ret;
+
+	devm_drm_panel_add(dev, &ctx->panel);
+
+	ret = devm_mipi_dsi_attach(dev, dsi);
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
+
+	return 0;
+}
+
+static const struct drm_display_mode anbernic_vitapro_mode = {
+	.clock = 140020,
+	.hdisplay = 1080,
+	.hsync_start = 1080 + 50,
+	.hsync_end = 1080 + 50 + 4,
+	.htotal = 1080 + 50 + 4 + 50,
+	.vdisplay = 1920,
+	.vsync_start = 1920 + 15,
+	.vsync_end = 1920 + 15 + 4,
+	.vtotal = 1920 + 15 + 4 + 32,
+	.flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
+};
+
+static const struct anbernic_panel_td4310_info anbernic_vitapro_info = {
+	.display_mode = &anbernic_vitapro_mode,
+	.width_mm = 69,
+	.height_mm = 121,
+	.bus_flags = DRM_BUS_FLAG_DE_LOW | DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE,
+	.mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
+		      MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_NO_EOT_PACKET |
+		      MIPI_DSI_CLOCK_NON_CONTINUOUS,
+	.format = MIPI_DSI_FMT_RGB888,
+	.lanes = 4,
+	.prepare_delay = 50,
+	.reset_delay = 220,
+	.enable_delay = 120,
+	.disable_delay = 50,
+	.unprepare_delay = 20,
+};
+
+static const struct of_device_id panel_anbernic_td4310_of_match[] = {
+	{
+		.compatible = "anbernic,panel-vita-pro",
+		.data = &anbernic_vitapro_info,
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, panel_anbernic_td4310_of_match);
+
+static struct mipi_dsi_driver anbernic_panel_td4310_driver = {
+	.driver = {