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path: root/src/soc/mediatek/mt8195/i2c.c
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2024-09-12soc/mediatek: Remove redundant struct pad_func and PAD_* definitionsYidi Lin
Clean up redundant `struct pad_func` and `PAD_*` definitions. This patch also refactors the PAD_* macros by, - Repurposing PAD_FUNC and dropping PAD_FUNC_SEL. - Adding PAD_FUNC_DOWN and PAD_FUNC_UP to avoid the implicit initialization. BUG=none TEST=emerge-{elm, kukui, asurada, cherry, corsola, geralt, rauru} coreboot Change-Id: I12b8f6749015bff52988208a7c3aa01e952612c6 Signed-off-by: Yidi Lin <yidilin@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/84222 Reviewed-by: Yu-Ping Wu <yupingso@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2023-01-13soc/mediatek: Include <gpio.h> instead of <soc/gpio.h>Elyes Haouas
<gpio.h> chain-include <soc/gpio.h>. Change-Id: If2af7f77e2d910a3f3470d15dbfc98775a2633b6 Signed-off-by: Elyes Haouas <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/71813 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Hung-Te Lin <hungte@chromium.org>
2022-11-12soc/mediatek/mt8195: replace SPDX identifiers to GPL-2.0-only OR MITMacpaul Lin
This replaces 'SPDX-License-Identifier' tags in all the files under soc/mediatek/mt8195 for better code re-use in other open source software stack. These files were originally from MediaTek and follow coreboot's main license: "GPL-2.0-only". Now MediaTek replaces these files to "GPL-2.0-only OR MIT" license. Signed-off-by: Macpaul Lin <macpaul.lin@mediatek.com> Change-Id: I79a585c2a611dbfd294c1c94f998d972118b5c52 Reviewed-on: https://review.coreboot.org/c/coreboot/+/66625 Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.com> Reviewed-by: Yidi Lin <yidilin@google.com> Reviewed-by: Yu-Ping Wu <yupingso@google.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Elyes Haouas <ehaouas@noos.fr> Reviewed-by: Martin L Roth <gaumless@gmail.com>
2022-01-10src/soc/mediatek: Remove unused <timer.h>Elyes HAOUAS
Change-Id: Ic87e41a9b317cc7d0b36ece5ffd1d32068e6a33a Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/60612 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Yu-Ping Wu <yupingso@google.com>
2021-11-17soc/mediatek: move i2c function to common folderRex-BC Chen
Move mtk_i2c_max_step_cnt, mtk_i2c_check_ac_timing, mtk_i2c_speed_init and mtk_i2c_calculate_speed to common folder to share with MT8186. TEST=test on tomato ok TEST=emerge-asurada coreboot BUG=b:202871018 Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com> Change-Id: I4a702741c763bf9261cea90d0d71c08b6e28c261 Reviewed-on: https://review.coreboot.org/c/coreboot/+/59295 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Yu-Ping Wu <yupingso@google.com>
2021-10-02soc/mediatek: add debug dump for ltiming and clock_divRex-BC Chen
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>
2021-10-02soc/mediatek: Fix I2C failures by adjusting AC timing and bus speedDaolong Zhu
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>
2021-05-10soc/mediatek/mt8195: Add i2c driver supportkewei xu
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>