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| author | Mario Limonciello <mario.limonciello@amd.com> | 2023-04-14 09:40:07 -0500 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2023-04-20 18:20:05 +0800 |
| commit | 440da737cf8d35a1b2205678cc1879fa90948f7a (patch) | |
| tree | ac035f97f5f0234a5b0f211ed11e6ce763ca5d82 /include/linux/psp-platform-access.h | |
| parent | 1560541631a6f3215d27aeea182a5682644d33ba (diff) | |
| download | lwn-440da737cf8d35a1b2205678cc1879fa90948f7a.tar.gz lwn-440da737cf8d35a1b2205678cc1879fa90948f7a.zip | |
i2c: designware: Use PCI PSP driver for communication
Currently the PSP semaphore communication base address is discovered
by using an MSR that is not architecturally guaranteed for future
platforms. Also the mailbox that is utilized for communication with
the PSP may have other consumers in the kernel, so it's better to
make all communication go through a single driver.
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Mark Hasemeyer <markhas@chromium.org>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Tested-by: Mark Hasemeyer <markhas@chromium.org>
Acked-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/linux/psp-platform-access.h')
| -rw-r--r-- | include/linux/psp-platform-access.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/psp-platform-access.h b/include/linux/psp-platform-access.h index 1b661341d8f3..75da8f5f7ad8 100644 --- a/include/linux/psp-platform-access.h +++ b/include/linux/psp-platform-access.h @@ -7,6 +7,7 @@ enum psp_platform_access_msg { PSP_CMD_NONE = 0x0, + PSP_I2C_REQ_BUS_CMD = 0x64, }; struct psp_req_buffer_hdr { |