Rex-BC Chen
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f4d6e9085d
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soc/mediatek: add debug dump for ltiming and clock_div
ltiming and clock_div are not support for MT8173, so we separate them
to weak function: mtk_i2c_dump_more_info()
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: I3228c6953be5fac18a76029702b878a34c7563f7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58074
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.corp-partner.google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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2021-10-02 11:50:22 +00:00 |
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Daolong Zhu
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f4b71734b2
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soc/mediatek: Fix I2C failures by adjusting AC timing and bus speed
1. The original algorithm for I2C speed cannot always make the
timing meet I2C specification so a new algorithm is introduced
to calculate the timing parameters more correctly.
2. Some I2C buses should be initialized in a different speed while
the original implementation was fixed at fast mode (400Khz).
So the mtk_i2c_bus_init is now also taking an extra speed
parameter.
There is an equivalent change in kernel side:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/i2c/busses/i2c-mt65xx.c?h=v5.15-rc3&id=be5ce0e97cc7a5c0d2da45d617b7bc567c3d3fa1
BUG=b:189899864
TEST=Test on Tomato, boot pass and timing pass
at 100/300/400/500/800/1000Khz.
Signed-off-by: Daolong Zhu <jg_daolongzhu@mediatek.corp-partner.google.com>
Change-Id: Id25b7bb3a76908a7943b940eb5bee799e80626a0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58053
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.corp-partner.google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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2021-10-02 11:48:34 +00:00 |
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kewei xu
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978fa765ca
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soc/mediatek/mt8195: Add i2c driver support
TEST=write/read EEPROM on MT8195 EVB successfully
Change-Id: Ia26e55512501e9758d7f5543d176730cf30ce03d
Signed-off-by: kewei xu <kewei.xu@mediatek.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/53894
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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2021-05-10 01:57:31 +00:00 |
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