diff options
| author | Felix Held <felix.held@amd.corp-partner.google.com> | 2021-08-30 18:20:34 +0200 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2022-08-15 15:33:52 +0000 |
| commit | 8db77d71bbbb872831a6bb61dac249d551773a84 (patch) | |
| tree | 88fc6554faca16253bc7d9869ca1694d5b824cb2 /src/soc/amd | |
| parent | b02cc14367890661ca047ffe8c5d86a3e6bac95d (diff) | |
soc/amd/*: move reset_i2c_peripherals call after early GPIO setup
Since bootblock_soc_early_init gets called before
bootblock_mainboard_early_init which does the early GPIO setup, external
I2C level shifters that are controlled by GPIOs might not be enabled yet.
Moving the reset_i2c_peripherals call to bootblock_soc_init makes sure
that the early GPIO setup is already done when reset_i2c_peripherals is
called.
Haven't probed any SCL signal on the non-SoC side of the I2C level
shifters yet, but the waveform on the SCL pin of I2C3 on the SoC of a
barla/careena Chromebook doesn't have the longer than expected SCL
pulses any more.
Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: If02140aef56ed6db7ecee24811724b5b24e54a91
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57291
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Diffstat (limited to 'src/soc/amd')
| -rw-r--r-- | src/soc/amd/cezanne/early_fch.c | 2 | ||||
| -rw-r--r-- | src/soc/amd/mendocino/early_fch.c | 2 | ||||
| -rw-r--r-- | src/soc/amd/picasso/early_fch.c | 2 | ||||
| -rw-r--r-- | src/soc/amd/stoneyridge/bootblock.c | 11 |
4 files changed, 9 insertions, 8 deletions
diff --git a/src/soc/amd/cezanne/early_fch.c b/src/soc/amd/cezanne/early_fch.c index 027a0b54bf..586e80cbd0 100644 --- a/src/soc/amd/cezanne/early_fch.c +++ b/src/soc/amd/cezanne/early_fch.c @@ -51,7 +51,6 @@ void fch_pre_init(void) fch_enable_legacy_io(); fch_disable_legacy_dma_io(); enable_aoac_devices(); - reset_i2c_peripherals(); /* * On reset Range_0 defaults to enabled. We want to start with a clean @@ -70,6 +69,7 @@ void fch_pre_init(void) /* After console init */ void fch_early_init(void) { + reset_i2c_peripherals(); pm_set_power_failure_state(); fch_print_pmxc0_status(); i2c_soc_early_init(); diff --git a/src/soc/amd/mendocino/early_fch.c b/src/soc/amd/mendocino/early_fch.c index fe68421949..d37b45d9ff 100644 --- a/src/soc/amd/mendocino/early_fch.c +++ b/src/soc/amd/mendocino/early_fch.c @@ -53,7 +53,6 @@ void fch_pre_init(void) fch_enable_legacy_io(); fch_disable_legacy_dma_io(); enable_aoac_devices(); - reset_i2c_peripherals(); /* * On reset Range_0 defaults to enabled. We want to start with a clean @@ -72,6 +71,7 @@ void fch_pre_init(void) /* After console init */ void fch_early_init(void) { + reset_i2c_peripherals(); pm_set_power_failure_state(); fch_print_pmxc0_status(); i2c_soc_early_init(); diff --git a/src/soc/amd/picasso/early_fch.c b/src/soc/amd/picasso/early_fch.c index f7435aae3d..d0c10f2589 100644 --- a/src/soc/amd/picasso/early_fch.c +++ b/src/soc/amd/picasso/early_fch.c @@ -60,7 +60,6 @@ void fch_pre_init(void) fch_enable_cf9_io(); fch_enable_legacy_io(); enable_aoac_devices(); - reset_i2c_peripherals(); /* * On reset Range_0 defaults to enabled. We want to start with a clean @@ -79,6 +78,7 @@ void fch_pre_init(void) /* After console init */ void fch_early_init(void) { + reset_i2c_peripherals(); pm_set_power_failure_state(); fch_print_pmxc0_status(); i2c_soc_early_init(); diff --git a/src/soc/amd/stoneyridge/bootblock.c b/src/soc/amd/stoneyridge/bootblock.c index 8c6fde521a..66b22be99e 100644 --- a/src/soc/amd/stoneyridge/bootblock.c +++ b/src/soc/amd/stoneyridge/bootblock.c @@ -96,6 +96,12 @@ asmlinkage void bootblock_c_entry(uint64_t base_timestamp) void bootblock_soc_early_init(void) { + bootblock_fch_early_init(); + post_code(0x90); +} + +void bootblock_soc_init(void) +{ /* * This call (sb_reset_i2c_peripherals) was originally early at * bootblock_c_entry, but had to be moved here. There was an @@ -105,12 +111,7 @@ void bootblock_soc_early_init(void) * just pauses but we don't know why. */ reset_i2c_peripherals(); - bootblock_fch_early_init(); - post_code(0x90); -} -void bootblock_soc_init(void) -{ if (CONFIG(AMD_SOC_CONSOLE_UART)) assert(CONFIG_UART_FOR_CONSOLE >= 0 && CONFIG_UART_FOR_CONSOLE <= 1); |