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board: stm32mp1: gt9147 IRQ before reset on EV1

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Software workaround for I2C issue on EV1 board,
configure the IRQ line for touchscreen before LCD reset
to fix the used I2C address.

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@st.com>
This commit is contained in:
Patrick Delaunay 2020-04-22 14:29:13 +02:00
parent 0c95295e17
commit 055065a8ac
1 changed files with 35 additions and 0 deletions
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35
board/st/stm32mp1/stm32mp1.c
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@ -616,6 +616,38 @@ static bool board_is_dk2(void)
}
#endif
static bool board_is_ev1(void)
{
if (CONFIG_IS_ENABLED(TARGET_ST_STM32MP15x) &&
(of_machine_is_compatible("st,stm32mp157a-ev1") ||
of_machine_is_compatible("st,stm32mp157c-ev1") ||
of_machine_is_compatible("st,stm32mp157d-ev1") ||
of_machine_is_compatible("st,stm32mp157f-ev1")))
return true;
return false;
}
/* touchscreen driver: only used for pincontrol configuration */
static const struct udevice_id goodix_ids[] = {
{ .compatible = "goodix,gt9147", },
{ }
};
U_BOOT_DRIVER(goodix) = {
.name = "goodix",
.id = UCLASS_NOP,
.of_match = goodix_ids,
};
static void board_ev1_init(void)
{
struct udevice *dev;
/* configure IRQ line on EV1 for touchscreen before LCD reset */
uclass_get_device_by_driver(UCLASS_NOP, DM_GET_DRIVER(goodix), &dev);
}
/* board dependent setup after realloc */
int board_init(void)
{
@ -633,6 +665,9 @@ int board_init(void)
board_key_check();
if (board_is_ev1())
board_ev1_init();
#ifdef CONFIG_DM_REGULATOR
if (board_is_dk2())
dk2_i2c1_fix();