Add reset of LTDC display controller.
Signed-off-by: yannick fertre <yannick.fer...@st.com>
---
drivers/video/stm32/stm32_ltdc.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/video/stm32/stm32_ltdc.c b/drivers/video/stm32/stm32_ltdc.c
index b417ac2..d8784f1 100644
--- a/drivers/video/stm32/stm32_ltdc.c
+++ b/drivers/video/stm32/stm32_ltdc.c
@@ -11,6 +11,7 @@
#include <clk.h>
#include <dm.h>
#include <panel.h>
+#include <reset.h>
#include <video.h>
#include <asm/io.h>
#include <asm/arch/gpio.h>
@@ -302,6 +303,7 @@ static int stm32_ltdc_probe(struct udevice *dev)
struct stm32_ltdc_priv *priv = dev_get_priv(dev);
struct udevice *panel;
struct clk pclk, pxclk;
+ struct reset_ctl rst;
int ret;
priv->regs = (void *)dev_read_addr(dev);
@@ -316,6 +318,15 @@ static int stm32_ltdc_probe(struct udevice *dev)
return ret;
}
+ ret = reset_get_by_index(dev, 0, &rst);
+ if (ret) {
+ debug("%s: missing ltdc hardware reset\n", __func__);
+ return -ENODEV;
+ }
+
+ /* Reset */
+ reset_deassert(&rst);
+
ret = panel_enable_backlight(panel);
if (ret) {
debug("%s: panel %s enable backlight error %d\n",
--
1.9.1
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