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video: stm32: stm32_ltdc: add reset

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Add reset of LTDC display controller.

Signed-off-by: yannick fertre <yannick.fertre@st.com>
This commit is contained in:
yannick fertre 2018-03-02 15:59:21 +01:00 committed by Anatolij Gustschin
parent 1ef9aed92a
commit c0fb2fc045
1 changed files with 11 additions and 0 deletions
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11
drivers/video/stm32/stm32_ltdc.c
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@ -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",