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.delau...@st.com>
---
board/st/stm32mp1/stm32mp1.c | 41 ++++++++++++++++++++++++++++++++++++
1 file changed, 41 insertions(+)
diff --git a/board/st/stm32mp1/stm32mp1.c b/board/st/stm32mp1/stm32mp1.c
index 6ca47509b3..52881adef7 100644
--- a/board/st/stm32mp1/stm32mp1.c
+++ b/board/st/stm32mp1/stm32mp1.c
@@ -626,6 +626,44 @@ 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 int board_ev1_init(void)
+{
+ struct udevice *dev;
+ int ret;
+
+ /* configure IRQ line on EV1 for touchscreen before LCD reset */
+ ret = uclass_get_device_by_driver(UCLASS_NOP, DM_GET_DRIVER(goodix),
+ &dev);
+ if (ret)
+ debug("goodix init failed: %d\n", ret);
+
+ return ret;
+}
+
/* board dependent setup after realloc */
int board_init(void)
{
@@ -643,6 +681,9 @@ 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();
--
2.17.1
