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 ---
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();