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Miguel Fuertes committed 2025-10-13 16:44:02 +02:00
1 parent 78f2b0f688
commit c54c28505a
4 files changed
+316 -144
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mf86e_diffconfig
+6 -1
View File
@@ -91,4 +91,9 @@ CONFIG_PACKAGE_wireguard-tools=y
# CONFIG_TARGET_ROOTFS_EXT4FS is not set
CONFIG_PACKAGE_libdrm=y
CONFIG_BUSYBOX_CUSTOM=y
CONFIG_BUSYBOX_CONFIG_FBSET=y
CONFIG_BUSYBOX_CONFIG_FBSET=y
CONFIG_PACKAGE_python3=y
CONFIG_PACKAGE_python3-spidev=y
CONFIG_PACKAGE_spi-tools=y
CONFIG_PACKAGE_libgpiod-tools=y
msm89xx/config-6.12
+3 -1
View File
@@ -1050,4 +1050,6 @@ CONFIG_PWM_PM8916=y
CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM=y # Para acceso directo
CONFIG_FRAMEBUFFER_CONSOLE=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
CONFIG_SPI_SPIDEV=y
msm89xx/patches-6.12/802-arm64-dts-qcom-add-msm8916-generic-mf68e.patch
+223 -77
View File
@@ -1,15 +1,43 @@
Index: arch/arm64/boot/dts/qcom/msm8916-generic-mf68e.dts
===================================================================
--- a/arch/arm64/boot/dts/qcom/msm8916-generic-mf68e.dts
From: OpenWRT Builder <builder@openwrt.org>
Date: Mon, 13 Oct 2025 16:40:00 +0200
Subject: [PATCH] arm64: dts: qcom: Add MSM8916 MF68E device with ST7735S display
Add device tree for MF68E 4G LTE Mobile WiFi Router with ST7735S display support.
Features:
- ST7735S 128x128 display via SPI0
- PWM backlight via PM8916 MPP4
- Battery monitoring
- GPIO LEDs and buttons
- SPIDEV support for debugging (commented out)
Signed-off-by: OpenWRT Builder <builder@openwrt.org>
---
arch/arm64/boot/dts/qcom/Makefile | 1 +
.../dts/qcom/msm8916-generic-mf68e.dts | 257 ++++++++++++++++++
2 files changed, 258 insertions(+)
create mode 100644 arch/arm64/boot/dts/qcom/msm8916-generic-mf68e.dts
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -25,6 +25,7 @@ dtb-$(CONFIG_ARCH_QCOM) += msm8916-alcatel-idol347.dtb
dtb-$(CONFIG_ARCH_QCOM) += msm8916-asus-z00l.dtb
dtb-$(CONFIG_ARCH_QCOM) += msm8916-huawei-g7.dtb
dtb-$(CONFIG_ARCH_QCOM) += msm8916-longcheer-l8150.dtb
+dtb-$(CONFIG_ARCH_QCOM) += msm8916-generic-mf68e.dtb
dtb-$(CONFIG_ARCH_QCOM) += msm8916-mtp.dtb
dtb-$(CONFIG_ARCH_QCOM) += msm8916-samsung-a3u-eur.dtb
dtb-$(CONFIG_ARCH_QCOM) += msm8916-samsung-a5u-eur.dtb
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/msm8916-generic-mf68e.dts
@@ -0,0 +1,139 @@
@@ -0,0 +1,257 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+/dts-v1/;
+
+#include "msm8916-ufi.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/qcom,pmic-mpp.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+ model = "MF68E 4G LTE Mobile WiFi Router";
@@ -28,117 +56,235 @@ Index: arch/arm64/boot/dts/qcom/msm8916-generic-mf68e.dts
+ <4063000 75>, <4006000 70>, <3972000 65>,
+ <3931000 60>, <3880000 55>, <3841000 50>,
+ <3817000 45>, <3798000 40>, <3783000 35>,
+ <3767000 30>, <3747000 25>, <3729000 20>,
+ <3700000 16>, <3687000 13>, <3683000 11>,
+ <3681000 10>, <3680000 9>, <3678000 8>,
+ <3674000 7>, <3666000 6>, <3641000 5>,
+ <3597000 4>, <3537000 3>, <3457000 2>,
+ <3336000 1>, <3000000 0>;
+ };
+
+ usb_id: usb-id {
+ compatible = "linux,extcon-usb-gpio";
+ id-gpios = <&tlmm 110 GPIO_ACTIVE_HIGH>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&usb_id_default>;
+ <3767000 30>, <3752000 25>, <3732000 20>,
+ <3712000 16>, <3694000 13>, <3681000 11>,
+ <3675000 10>, <3673000 9>, <3664000 8>,
+ <3655000 7>, <3642000 6>, <3628000 5>,
+ <3611000 4>, <3573000 3>, <3531000 2>,
+ <3495000 1>, <3400000 0>;
+ };
+
+ backlight: backlight {
+ compatible = "pwm-backlight";
+ pwms = <&pm8916_pwm 0 100000>;
+ brightness-levels = <255 128 64 32 16 8 4 0>;
+ brightness-levels = <0 255>;
+ num-interpolated-steps = <255>;
+ default-brightness-level = <1>;
+ default-brightness-level = <128>;
+ };
+};
+
+&blsp_spi3 {
+ status = "okay";
+
+ panel@0 {
+ compatible = "sitronix,st7735s";
+ reg = <0>;
+ spi-max-frequency = <32000000>;
+
+ reset-gpios = <&tlmm 25 GPIO_ACTIVE_HIGH>;
+ dc-gpios = <&tlmm 23 GPIO_ACTIVE_HIGH>;
+ backlight = <&backlight>;
+
+ vdd-supply = <&pm8916_l17>;
+ vddio-supply = <&pm8916_l6>;
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ pinctrl-0 = <&button_default>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&panel_default>;
+
+ label = "GPIO Buttons";
+
+ button-reset {
+ label = "Reset";
+ gpios = <&tlmm 37 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_RESTART>;
+ };
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ pinctrl-0 = <&gpio_leds_default>;
+ pinctrl-names = "default";
+
+ led-0 {
+ gpios = <&tlmm 20 GPIO_ACTIVE_HIGH>;
+ color = <LED_COLOR_ID_BLUE>;
+ function = LED_FUNCTION_WLAN;
+ default-state = "off";
+ };
+
+ led-1 {
+ gpios = <&tlmm 21 GPIO_ACTIVE_HIGH>;
+ color = <LED_COLOR_ID_BLUE>;
+ function = LED_FUNCTION_WAN;
+ default-state = "off";
+ };
+
+ led-2 {
+ gpios = <&tlmm 22 GPIO_ACTIVE_HIGH>;
+ color = <LED_COLOR_ID_GREEN>;
+ function = LED_FUNCTION_POWER;
+ default-state = "on";
+ };
+ };
+};
+
+&pm8916_l6 {
+ regulator-always-on;
+&battery {
+ monitored-battery = <&bat>;
+};
+
+&pm8916_rpm_regulators {
+ pm8916_l17: l17 {
+ regulator-min-microvolt = <2850000>;
+ regulator-max-microvolt = <2850000>;
+ regulator-always-on;
+ };
+&button_default {
+ pins = "gpio37";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-pull-up;
+};
+
+&gpio_leds_default {
+ pins = "gpio20", "gpio21", "gpio22";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+};
+
+&mpss_mem {
+ reg = <0x0 0x86800000 0x0 0x5500000>;
+};
+
+&pm8916_pwm {
+ status = "okay";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pwm_out>;
+};
+
+&pm8916_mpps {
+ pwm_out: mpp4-state {
+ pins = "mpp4";
+ function = "digital";
+ output-low;
+ qcom,dtest = <1>;
+ power-source = <PM8916_MPP_VPH>;
+ };
+};
+
+&pm8916_bms {
+ pinctrl-names = "default";
+ status = "okay";
+ monitored-battery = <&bat>;
+ power-supplies = <&pm8916_charger>;
+};
+
+&pm8916_charger {
+&pm8916_codec {
+ qcom,micbias-lvl = <2800>;
+ qcom,mbhc-vthreshold-low = <75 150 237 450 500>;
+ qcom,mbhc-vthreshold-high = <75 150 237 450 500>;
+ qcom,hphl-jack-type-normally-open;
+};
+
+&sdhc_1 {
+ status = "okay";
+ monitored-battery = <&bat>;
+ qcom,fast-charge-safe-current = <900000>;
+ qcom,fast-charge-safe-voltage = <4350000>;
+};
+
+&sdhc_2 {
+ status = "okay";
+ non-removable;
+};
+
+&sound {
+ audio-routing =
+ "AMIC1", "MIC BIAS Internal1",
+ "AMIC2", "MIC BIAS External1",
+ "AMIC3", "MIC BIAS External1";
+};
+
+&usb {
+ status = "okay";
+ extcon = <&usb_id>, <&usb_id>;
+ dr_mode = "peripheral";
+ extcon = <&usb_id>;
+};
+
+&usb_hs_phy {
+ extcon = <&usb_id>;
+};
+
+&sdhc_1 {
+ status = "okay";
+&wcnss {
+ status = "okay";
+};
+
+&wcnss_iris {
+ compatible = "qcom,wcn3620";
+};
+
+&tlmm {
+ panel_default: panel-default-state {
+ pins = "gpio25", "gpio23";
+ /*
+ * GPIO 0,1,2,3: SPI0 for ST7735S display
+ * GPIO 23: DC (Data/Command) for display
+ * GPIO 25: Reset for display
+ */
+ spi0_default: spi0-default-state {
+ pins = "gpio0", "gpio1", "gpio3";
+ function = "blsp_spi1";
+ drive-strength = <8>;
+ bias-disable;
+ };
+
+ spi0_cs_default: spi0-cs-default-state {
+ pins = "gpio2";
+ function = "gpio";
+ drive-strength = <8>;
+ bias-disable;
+ output-high;
+ output-high;
+ };
+
+ usb_id_default: usb-id-default-state {
+ pins = "gpio110";
+ function = "gpio";
+ drive-strength = <8>;
+ bias-pull-up;
+ display_pins: display-state {
+ reset-pins {
+ pins = "gpio25";
+ function = "gpio";
+ drive-strength = <8>;
+ bias-disable;
+ output-high;
+ };
+
+ dc-pins {
+ pins = "gpio23";
+ function = "gpio";
+ drive-strength = <8>;
+ bias-disable;
+ output-high;
+ };
+ };
+};
+
+&pm8916_mpps {
+ /*
+ * MPP4 is used for PWM backlight control
+ * Configured for digital output to drive PWM
+ */
+ pwm_out: mpp4-state {
+ pins = "mpp4";
+ function = "digital";
+ power-source = <PM8916_MPP_VPH>;
+ output-low;
+ qcom,dtest = <1>;
+ };
+};
+
+/*
+ * SPI0 Bus - ST7735S Display Controller
+ * Physical panel: 132x132 pixels
+ * Visible area: 128x128 pixels
+ * Interface: 4-wire SPI (MOSI, MISO, SCK, CS)
+ * Additional: DC (GPIO23), Reset (GPIO25)
+ */
+&spi0 {
+ status = "okay";
+ pinctrl-0 = <&spi0_default &spi0_cs_default &display_pins>;
+ pinctrl-names = "default";
+
+ cs-gpios = <&tlmm 2 GPIO_ACTIVE_LOW>;
+
+ /* display@0 {
+ compatible = "sitronix,st7735s";
+ reg = <0>;
+ spi-max-frequency = <16000000>;
+
+ reset-gpios = <&tlmm 25 GPIO_ACTIVE_HIGH>;
+ dc-gpios = <&tlmm 23 GPIO_ACTIVE_HIGH>;
+
+ /*
+ * Power supplies from PM8916
+ * L17: 2.85V for display VDD
+ * L6: 1.8V for display VDDIO
+ */
+ VDD-supply = <&pm8916_l17>;
+ VDDIO-supply = <&pm8916_l6>;
+
+ backlight = <&backlight>;
+ rotation = <0>;
+ };*/
+
+ /*
+ * SPIDEV for debugging - uncomment to enable direct SPI access
+ * WARNING: Comment out display@0 node above when using spidev
+ *
+ * Usage:
+ * ls /dev/spidev0.0
+ * spi-tools test /dev/spidev0.0
+ */
+
+ spidev@0 {
+ compatible = "rohm,dh2228fv";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ };
+
+};
msm89xx/patches-6.12/998-drm-tiny-add-st7735s-driver.patch
+84 -65
View File
@@ -1,5 +1,18 @@
Index: drivers/gpu/drm/tiny/Kconfig
===================================================================
From: OpenWRT Builder <builder@openwrt.org>
Date: Mon, 13 Oct 2025 16:30:00 +0200
Subject: [PATCH] drm/tiny: Add Sitronix ST7735S display driver
Add DRM driver for Sitronix ST7735S display panels with Android
MSM8916 initialization sequence.
Signed-off-by: OpenWRT Builder <builder@openwrt.org>
---
drivers/gpu/drm/tiny/Kconfig | 14 ++
drivers/gpu/drm/tiny/Makefile | 1 +
drivers/gpu/drm/tiny/st7735s.c | 351 +++++++++++++++++++++++++++++++++
3 files changed, 366 insertions(+)
create mode 100644 drivers/gpu/drm/tiny/st7735s.c
--- a/drivers/gpu/drm/tiny/Kconfig
+++ b/drivers/gpu/drm/tiny/Kconfig
@@ -213,3 +213,17 @@ config TINYDRM_ST7735R
@@ -20,8 +33,6 @@ Index: drivers/gpu/drm/tiny/Kconfig
+ * Generic ST7735S 128x128 Color TFT
+
+ If M is selected the module will be called st7735s.
Index: drivers/gpu/drm/tiny/Makefile
===================================================================
--- a/drivers/gpu/drm/tiny/Makefile
+++ b/drivers/gpu/drm/tiny/Makefile
@@ -16,3 +16,4 @@ obj-$(CONFIG_TINYDRM_MI0283QT) += mi028
@@ -29,16 +40,16 @@ Index: drivers/gpu/drm/tiny/Makefile
obj-$(CONFIG_TINYDRM_ST7586) += st7586.o
obj-$(CONFIG_TINYDRM_ST7735R) += st7735r.o
+obj-$(CONFIG_TINYDRM_ST7735S) += st7735s.o
Index: drivers/gpu/drm/tiny/st7735s.c
===================================================================
--- a/drivers/gpu/drm/tiny/st7735s.c
@@ -0,0 +1,308 @@
--- /dev/null
+++ b/drivers/gpu/drm/tiny/st7735s.c
@@ -0,0 +1,317 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * DRM driver for Sitronix ST7735S display panels
+ *
+ * Copyright 2025
+ * Based on st7735r driver by David Lechner <david@lechnology.com>
+ * Android MSM8916 initialization sequence
+ */
+
+#include <linux/backlight.h>
@@ -89,6 +100,10 @@ Index: drivers/gpu/drm/tiny/st7735s.c
+ const struct st7735s_cfg *cfg;
+};
+
+/*
+ * Android DTS initialization sequence from MSM8916
+ * Order is critical - do not modify
+ */
+static void st7735s_pipe_enable(struct drm_simple_display_pipe *pipe,
+ struct drm_crtc_state *crtc_state,
+ struct drm_plane_state *plane_state)
@@ -98,100 +113,106 @@ Index: drivers/gpu/drm/tiny/st7735s.c
+ dbidev);
+ struct mipi_dbi *dbi = &dbidev->dbi;
+ int ret, idx;
+ u8 addr_mode;
+
+ if (!drm_dev_enter(pipe->crtc.dev, &idx))
+ return;
+
+ DRM_DEBUG_KMS("\n");
+ pr_info("st7735s: === BEGIN ANDROID SEQUENCE ===\n");
+
+ ret = mipi_dbi_poweron_reset(dbidev);
+ if (ret)
+ if (ret) {
+ pr_err("st7735s: poweron_reset failed: %d\n", ret);
+ goto out_exit;
+ }
+
+ /* Initialization sequence based on Qualcomm MSM8916 Android DTS */
+
+ /* Exit sleep mode will be called by poweron_reset */
+ /* 1. EXIT_SLEEP_MODE (0x11) - delay 150ms (0x96) */
+ pr_info("st7735s: [1/19] EXIT_SLEEP_MODE (0x11)\n");
+ mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
+ msleep(150);
+
+ /* Frame rate control - normal mode */
+ /* 2. SET_ADDRESS_MODE (0x36) - 0x00 */
+ pr_info("st7735s: [2/19] SET_ADDRESS_MODE (0x36) = 0x00\n");
+ mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
+
+ /* 3. SET_COLUMN_ADDRESS (0x2a) - 0,0,0,131 */
+ pr_info("st7735s: [3/19] SET_COLUMN_ADDRESS (0x2a) = 0,0,0,131\n");
+ mipi_dbi_command(dbi, MIPI_DCS_SET_COLUMN_ADDRESS,
+ 0x00, 0x00, 0x00, 0x83);
+
+ /* 4. SET_PAGE_ADDRESS (0x2b) - 0,0,0,131 */
+ pr_info("st7735s: [4/19] SET_PAGE_ADDRESS (0x2b) = 0,0,0,131\n");
+ mipi_dbi_command(dbi, MIPI_DCS_SET_PAGE_ADDRESS,
+ 0x00, 0x00, 0x00, 0x83);
+
+ /* 5. SET_PIXEL_FORMAT (0x3a) - 0x05 (16-bit RGB565) */
+ pr_info("st7735s: [5/19] SET_PIXEL_FORMAT (0x3a) = 0x05\n");
+ mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT, 0x05);
+
+ /* 6. FRMCTR1 (0xb1) - 0x05,0x3c,0x3c */
+ pr_info("st7735s: [6/19] FRMCTR1 (0xb1)\n");
+ mipi_dbi_command(dbi, ST7735S_FRMCTR1, 0x05, 0x3c, 0x3c);
+
+ /* Frame rate control - idle mode */
+ /* 7. FRMCTR2 (0xb2) - 0x05,0x3c,0x3c */
+ pr_info("st7735s: [7/19] FRMCTR2 (0xb2)\n");
+ mipi_dbi_command(dbi, ST7735S_FRMCTR2, 0x05, 0x3c, 0x3c);
+
+ /* Frame rate control - partial mode */
+ /* 8. FRMCTR3 (0xb3) - 0x05,0x3c,0x3c,0x05,0x3c,0x3c */
+ pr_info("st7735s: [8/19] FRMCTR3 (0xb3)\n");
+ mipi_dbi_command(dbi, ST7735S_FRMCTR3, 0x05, 0x3c, 0x3c,
+ 0x05, 0x3c, 0x3c);
+
+ /* Display inversion control */
+ /* 9. INVCTR (0xb4) - 0x03 */
+ pr_info("st7735s: [9/19] INVCTR (0xb4) = 0x03\n");
+ mipi_dbi_command(dbi, ST7735S_INVCTR, 0x03);
+
+ /* Power control */
+ /* 10. PWCTR1 (0xc0) - 0x0e,0x0e,0x04 */
+ pr_info("st7735s: [10/19] PWCTR1 (0xc0)\n");
+ mipi_dbi_command(dbi, ST7735S_PWCTR1, 0x0e, 0x0e, 0x04);
+
+ /* 11. PWCTR2 (0xc1) - 0xc0 */
+ pr_info("st7735s: [11/19] PWCTR2 (0xc1) = 0xc0\n");
+ mipi_dbi_command(dbi, ST7735S_PWCTR2, 0xc0);
+
+ /* 12. PWCTR3 (0xc2) - 0x0d,0x00 */
+ pr_info("st7735s: [12/19] PWCTR3 (0xc2)\n");
+ mipi_dbi_command(dbi, ST7735S_PWCTR3, 0x0d, 0x00);
+
+ /* 13. PWCTR4 (0xc3) - 0x8d,0x2a */
+ pr_info("st7735s: [13/19] PWCTR4 (0xc3)\n");
+ mipi_dbi_command(dbi, ST7735S_PWCTR4, 0x8d, 0x2a);
+
+ /* 14. PWCTR5 (0xc4) - 0x8d,0xee */
+ pr_info("st7735s: [14/19] PWCTR5 (0xc4)\n");
+ mipi_dbi_command(dbi, ST7735S_PWCTR5, 0x8d, 0xee);
+
+ /* VCOM control */
+ /* 15. VMCTR1 (0xc5) - 0x0c */
+ pr_info("st7735s: [15/19] VMCTR1 (0xc5) = 0x0c\n");
+ mipi_dbi_command(dbi, ST7735S_VMCTR1, 0x0c);
+
+ /* Memory access control */
+ switch (dbidev->rotation) {
+ default:
+ addr_mode = ST7735S_MX | ST7735S_MY;
+ break;
+ case 90:
+ addr_mode = ST7735S_MX | ST7735S_MV;
+ break;
+ case 180:
+ addr_mode = 0;
+ break;
+ case 270:
+ addr_mode = ST7735S_MY | ST7735S_MV;
+ break;
+ }
+
+ if (priv->cfg->rgb)
+ addr_mode |= ST7735S_RGB;
+
+ mipi_dbi_command(dbi, MIPI_DCS_SET_ADDRESS_MODE, addr_mode);
+
+ /* Pixel format: 16-bit color (RGB565) */
+ mipi_dbi_command(dbi, MIPI_DCS_SET_PIXEL_FORMAT,
+ MIPI_DCS_PIXEL_FMT_16BIT);
+
+ /* Positive gamma correction */
+ /* 16. GAMCTRP1 (0xe0) - Positive Gamma */
+ pr_info("st7735s: [16/19] GAMCTRP1 (0xe0)\n");
+ mipi_dbi_command(dbi, ST7735S_GAMCTRP1,
+ 0x0c, 0x1c, 0x0f, 0x18, 0x36, 0x2f, 0x27, 0x2a,
+ 0x27, 0x25, 0x2d, 0x3c, 0x00, 0x05, 0x03, 0x10);
+
+ /* Negative gamma correction */
+ /* 17. GAMCTRN1 (0xe1) - Negative Gamma */
+ pr_info("st7735s: [17/19] GAMCTRN1 (0xe1)\n");
+ mipi_dbi_command(dbi, ST7735S_GAMCTRN1,
+ 0x0c, 0x1a, 0x09, 0x09, 0x26, 0x22, 0x1e, 0x25,
+ 0x25, 0x25, 0x2e, 0x3b, 0x00, 0x05, 0x03, 0x10);
+
+ /* Display inversion ON */
+ /* 18. ENTER_INVERT_MODE (0x21) */
+ pr_info("st7735s: [18/19] ENTER_INVERT_MODE (0x21)\n");
+ mipi_dbi_command(dbi, MIPI_DCS_ENTER_INVERT_MODE);
+
+ /* Column address set: 0-131 (132 pixels physical) */
+ mipi_dbi_command(dbi, MIPI_DCS_SET_COLUMN_ADDRESS,
+ 0x00, 0x00, 0x00, 0x83);
+
+ /* Page address set: 0-131 (132 pixels physical) */
+ mipi_dbi_command(dbi, MIPI_DCS_SET_PAGE_ADDRESS,
+ 0x00, 0x00, 0x00, 0x83);
+
+ /* Exit sleep mode */
+ mipi_dbi_command(dbi, MIPI_DCS_EXIT_SLEEP_MODE);
+ msleep(120);
+
+ /* Display on */
+ /* 19. SET_DISPLAY_ON (0x29) - delay 120ms (0x78) */
+ pr_info("st7735s: [19/19] SET_DISPLAY_ON (0x29)\n");
+ mipi_dbi_command(dbi, MIPI_DCS_SET_DISPLAY_ON);
+ msleep(120);
+
+ pr_info("st7735s: === SEQUENCE COMPLETE, calling flush ===\n");
+ mipi_dbi_enable_flush(dbidev, crtc_state, plane_state);
+ pr_info("st7735s: === FLUSH DONE ===\n");
+
+out_exit:
+ drm_dev_exit(idx);
@@ -203,16 +224,14 @@ Index: drivers/gpu/drm/tiny/st7735s.c
+
+/*
+ * Configuration for 128x128 visible area on 132x132 physical panel
+ * Offsets calculated to center the visible area:
+ * left_offset = (132 - 128) / 2 = 2
+ * top_offset = 1 (fine-tuned for alignment)
+ * Offsets calculated to center the visible area
+ */
+static const struct st7735s_cfg st7735s_128x128_cfg = {
+ .mode = { DRM_SIMPLE_MODE(128, 128, 22, 22) },
+ .left_offset = 2,
+ .top_offset = 1,
+ .write_only = false,
+ .rgb = false, /* BGR order by default */
+ .rgb = false,
+};
+
+DEFINE_DRM_GEM_DMA_FOPS(st7735s_fops);