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path: root/src/soc/amd/cezanne/i2c.c
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2022-02-07treewide: Remove "ERROR: "/"WARN: " prefixes from log messagesJulius Werner
Now that the console system itself will clearly differentiate loglevels, it is no longer necessary to explicitly add "ERROR: " in front of every BIOS_ERR message to help it stand out more (and allow automated tooling to grep for it). Removing all these extra .rodata characters should save us a nice little amount of binary size. This patch was created by running find src/ -type f -exec perl -0777 -pi -e 's/printk\(\s*BIOS_ERR,\s*"ERROR: /printk\(BIOS_ERR, "/gi' '{}' ';' and doing some cursory review/cleanup on the result. Then doing the same thing for BIOS_WARN with 's/printk\(\s*BIOS_WARNING,\s*"WARN(ING)?: /printk\(BIOS_WARNING, "/gi' Signed-off-by: Julius Werner <jwerner@chromium.org> Change-Id: I3d0573acb23d2df53db6813cb1a5fc31b5357db8 Reviewed-on: https://review.coreboot.org/c/coreboot/+/61309 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Reviewed-by: Lance Zhao Reviewed-by: Jason Glenesk <jason.glenesk@gmail.com>
2022-02-03soc/amd/*/i2c: factor out common I2C pad configurationFelix Held
The I2C pad control registers of Picasso and Cezanne are identical and the one of Sabrina is a superset of it, so factor out the functionality. To avoid having devicetree settings that contain raw register bits, the i2c_pad_control struct is introduced and used. The old Picasso code for this had the RX level hard-coded for 3.3V I2C interfaces, so keep it this way in this patch but add a TODO for future improvements. Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Change-Id: I1d70329644b68be3c4a1602f748e09db20cf6de1 Reviewed-on: https://review.coreboot.org/c/coreboot/+/61568 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Raul Rangel <rrangel@chromium.org>
2022-02-03soc/amd/*/i2c: introduce and use MISC_I2C_PAD_CTRL(bus) macroFelix Held
Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Change-Id: I9d098a55a5c6f6e022c3896750c752e2759e101b Reviewed-on: https://review.coreboot.org/c/coreboot/+/61567 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Raul Rangel <rrangel@chromium.org>
2022-02-03soc/amd/*/i2c: drop unused mainboard_i2c_overrideFelix Held
No mainboard in the current tree implements mainboard_i2c_override. In a follow-up commit the i2c_pad_control struct is introduced to be able to make more parameters controllable by devicetree settings in the future. Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Change-Id: I8f9ed5d50d26e4623dc5888cc8af090fdd00fc03 Reviewed-on: https://review.coreboot.org/c/coreboot/+/61566 Reviewed-by: Raul Rangel <rrangel@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-06-07soc/amd/cezanne: Configure I2C Pad RX Select through devicetreeKarthikeyan Ramasubramanian
Some of the I2C buses are required to operate at different voltage level compared to other I2C buses eg. I2C bus to Google Security Chip (GSC) should be at 1.8V level. By default, all the I2C buses are initialized to operate at 3.3 V. Add support to configure I2C pad RX select through devicetree and update the concerned devicetree. BUG=b:188538373 TEST=Build and boot to OS in Guybrush. Ensure that the communication with GSC is fine. Build Majolica mainboard. Change-Id: I595a64736fdac0274abffb68c5e521302275b845 Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/55149 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Raul Rangel <rrangel@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2021-04-23soc/amd/cezanne: fix i2c compiler errors on non-x86Kangheui Won
if ENV_X86 is not true we had several compile errors in i2c code. Fix them before we add code for psp_verstage which is non-x86. BUG=b:182477057 BRANCH=none TEST=build Signed-off-by: Kangheui Won <khwon@chromium.org> Change-Id: I0796671dd34ab2d0f123c904a88c57cdad116a57 Reviewed-on: https://review.coreboot.org/c/coreboot/+/52538 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Angel Pons <th3fanbus@gmail.com> Reviewed-by: Raul Rangel <rrangel@chromium.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
2021-03-22soc/amd/cezanne: Get I2C specific code for cezanneZheng Bao
Add macros, settings and callbacks to support I2C for cezanne. Change-Id: Ic480681d4b7c6fb8591e729090e4faeb5fccf800 Signed-off-by: Zheng Bao <fishbaozi@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51025 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Martin Roth <martinroth@google.com>