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Change-Id: I50e874790dedcb6bf3b3ac8368821f22611aa3b7
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/82894
Reviewed-by: Yidi Lin <yidilin@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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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>
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The TPS65132S is designed to supply positive/negative driven
application. It communicates through standard I2C compatible interface,
and it intergrates a EEPROM whose contents will be loaded into the
register at startup. Since TPS65132S is used in staryu and geralt
projects, we move the implementation to mediatek/common.
The datasheet: TPS65132-Single-Inductor-Dual-Output-Power-Supply.pdf
BUG=b:282902297
TEST=boot starmie to firmware screen
Signed-off-by: Ruihai Zhou <zhouruihai@huaqin.corp-partner.google.com>
Change-Id: Iad2c9bdea5824455efcef18b44876111061cfa1a
Reviewed-on: https://review.coreboot.org/c/coreboot/+/75488
Reviewed-by: Yidi Lin <yidilin@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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