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| author | Furquan Shaikh <furquan@chromium.org> | 2017-08-04 15:58:26 -0700 |
|---|---|---|
| committer | Furquan Shaikh <furquan@google.com> | 2017-08-10 16:24:57 +0000 |
| commit | 3406dd64c328bf0f2f1902d42b239f84c136e4f0 (patch) | |
| tree | 3a041bafb43a260432cb0c9e2f769e5b177ad9fe /src/soc/intel/common/block/uart/Kconfig | |
| parent | 836f94c6126b8a9529321c6af71babdae3202592 (diff) | |
| download | coreboot-3406dd64c328bf0f2f1902d42b239f84c136e4f0.tar.xz | |
soc/intel/common/uart: Refactor uart_common_init
1. Create a new function uart_lpss_init which takes the UART LPSS
controller out of reset and initializes and enables clock.
2. Instead of passing in m/n clock divider values as parameters to
uart_common_init, introduce Kconfig variables so that uart_lpss_init
can use the values directly without having to query the SoC.
BUG=b:64030366
TEST=Verified that UART still works on APL and KBL boards.
Change-Id: I74d01b0037d8c38fe6480c38ff2283d76097282a
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/20884
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/soc/intel/common/block/uart/Kconfig')
| -rw-r--r-- | src/soc/intel/common/block/uart/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/uart/Kconfig b/src/soc/intel/common/block/uart/Kconfig index 103659f4c4..f4a0e4e4b9 100644 --- a/src/soc/intel/common/block/uart/Kconfig +++ b/src/soc/intel/common/block/uart/Kconfig @@ -3,3 +3,15 @@ config SOC_INTEL_COMMON_BLOCK_UART select SOC_INTEL_COMMON_BLOCK_LPSS help Intel Processor common UART support + +config SOC_INTEL_COMMON_BLOCK_UART_LPSS_CLK_M_VAL + depends on SOC_INTEL_COMMON_BLOCK_UART + hex + help + Clock m-divisor value for m/n divider + +config SOC_INTEL_COMMON_BLOCK_UART_LPSS_CLK_N_VAL + depends on SOC_INTEL_COMMON_BLOCK_UART + hex + help + Clock m-divisor value for m/n divider |