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| author | Ruihai Zhou <zhouruihai@huaqin.corp-partner.google.com> | 2023-07-03 20:10:28 +0800 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2023-07-10 14:19:13 +0000 |
| commit | 266e6557ba50a33fd1290f64552dc76d7fb48151 (patch) | |
| tree | 7549e8b104f31a7accf0dd661ad0cab87d6e6581 /src/soc/mediatek | |
| parent | a8602a17bc7a18d29ffcb96e193a37903efe0394 (diff) | |
| download | coreboot-266e6557ba50a33fd1290f64552dc76d7fb48151.tar.gz coreboot-266e6557ba50a33fd1290f64552dc76d7fb48151.tar.bz2 coreboot-266e6557ba50a33fd1290f64552dc76d7fb48151.zip | |
mb/google/corsola: Add support for AW37503 Power IC
The AW37503 is designed to supply positive/negative supply for driving
the MIPI panel. It doesn't integrate non-volatile memory(EEPROM), so we
need to program the registers at boot. We program the target
positive/negative output voltage via I2C and enable the power rails by
pulling up ENP and ENN pins.
On Starmie, we need +/-6V power supply for the MIPI panel. We program
the AW37503 registers in coreboot so that kernel can control AW37503
via fixed regulators without additional settings(what we did for
TPS65132). Since we distinguish AW37503 and TPS65132 by reading the
vendor ID, we need to initialize I2C bus as early as possible.
Therefore, we move mtk_i2c_bus_init() to mainboard_init().
BUG=b:289482828
TEST=emerge-staryu coreboot chromeos-bootimage
TEST=Test the sequence the voltage
Change-Id: I9ccd4db19c93a032226f006eab0427f78f7b6dc8
Signed-off-by: Ruihai Zhou <zhouruihai@huaqin.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/76219
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Reviewed-by: cong yang <yangcong5@huaqin.corp-partner.google.com>
Reviewed-by: Yidi Lin <yidilin@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/mediatek')
| -rw-r--r-- | src/soc/mediatek/common/tps65132s.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/src/soc/mediatek/common/tps65132s.c b/src/soc/mediatek/common/tps65132s.c index 4683a43072ab..5a290351232e 100644 --- a/src/soc/mediatek/common/tps65132s.c +++ b/src/soc/mediatek/common/tps65132s.c @@ -30,10 +30,6 @@ enum cb_err tps65132s_setup(const struct tps65132s_cfg *cfg) u8 val; int i; - /* Initialize I2C bus for PMIC TPS65132 */ - mtk_i2c_bus_init(cfg->i2c_bus, I2C_SPEED_FAST); - mdelay(10); - gpio_output(cfg->en, 1); gpio_output(cfg->sync, 1); mdelay(10); |