在defconfig里加上CONFIG_SIMPLE_PANEL=y。
然后最重要的是修改其中的代码，添加获取timing逻辑，你可以参考以下修改（enable部分可以不注释，看你需求），或者你自己添加解析设备树获取timing的代码：
--- a/drivers/video/simple_panel.c
+++ b/drivers/video/simple_panel.c
@@ -18,12 +18,27 @@ struct simple_panel_priv {
struct gpio_desc enable;
};
+/* define your panel timing here and
+ * copy it in simple_panel_get_display_timing */
+static const struct display_timing boe_ev121wxm_n10_1850_timing = {
+ .pixelclock.typ = 71143000,
+ .hactive.typ = 1280,
+ .hfront_porch.typ = 32,
+ .hback_porch.typ = 80,
+ .hsync_len.typ = 48,
+ .vactive.typ = 800,
+ .vfront_porch.typ = 6,
+ .vback_porch.typ = 14,
+ .vsync_len.typ = 3,
+};
+
static int simple_panel_enable_backlight(struct udevice *dev)
{
struct simple_panel_priv *priv = dev_get_priv(dev);
int ret;
+ debug("%s\n", __func__);
- dm_gpio_set_value(&priv->enable, 1);
+ //dm_gpio_set_value(&priv->enable, 1);
if (priv->backlight) {
debug("%s: start, backlight = '%s'\n", __func__, priv->backlight->name);
ret = backlight_enable(priv->backlight);
@@ -40,8 +55,10 @@ static int simple_panel_set_backlight(struct udevice *dev, int percent)
struct simple_panel_priv *priv = dev_get_priv(dev);
int ret;
+ debug("%s\n", __func__);
+
debug("%s: start, backlight = '%s'\n", __func__, priv->backlight->name);
- dm_gpio_set_value(&priv->enable, 1);
+ //dm_gpio_set_value(&priv->enable, 1);
if (priv->backlight) {
ret = backlight_set_brightness(priv->backlight, percent);
debug("%s: done, ret = %d\n", __func__, ret);
@@ -57,6 +74,8 @@ static int simple_panel_of_to_plat(struct udevice *dev)
struct simple_panel_priv *priv = dev_get_priv(dev);
int ret;
+ debug("%s\n", __func__);
+
if (IS_ENABLED(CONFIG_DM_REGULATOR)) {
ret = uclass_get_device_by_phandle(UCLASS_REGULATOR, dev,
"power-supply", &priv->reg);
@@ -91,6 +110,8 @@ static int simple_panel_probe(struct udevice *dev)
struct simple_panel_priv *priv = dev_get_priv(dev);
int ret;
+ debug("%s\n", __func__);
+
if (IS_ENABLED(CONFIG_DM_REGULATOR) && priv->reg) {
debug("%s: Enable regulator '%s'\n", __func__, priv->reg->name);
ret = regulator_set_enable(priv->reg, true);
@@ -100,10 +121,18 @@ static int simple_panel_probe(struct udevice *dev)
return 0;
}
+static int simple_panel_get_display_timing(struct udevice *dev,
+ struct display_timing *timings)
+{
+ memcpy(timings, &boe_ev121wxm_n10_1850_timing, sizeof(*timings));
+
+ return 0;
+}
static const struct panel_ops simple_panel_ops = {
.enable_backlight = simple_panel_enable_backlight,
.set_backlight = simple_panel_set_backlight,
+ .get_display_timing = simple_panel_get_display_timing,
};
static const struct udevice_id simple_panel_ids[] = {
@@ -115,6 +144,7 @@ static const struct udevice_id simple_panel_ids[] = {
{ .compatible = "lg,lb070wv8" },
{ .compatible = "sharp,lq123p1jx31" },
{ .compatible = "boe,nv101wxmn51" },
+ { .compatible = "boe,ev121wxm-n10-1850" },
{ }
};
