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| author | Cheng-Yi Chiang <cychiang@google.com> | 2019-10-14 12:10:51 +0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-10-24 15:45:37 +0000 |
| commit | cfde82c1d74bf044bf849adaaf44fc3a268ec10f (patch) | |
| tree | e45a986ac392bbc06af8a0600a1d70101fb21985 /src/vendorcode/google/chromeos/Kconfig | |
| parent | fcdb03358d5d950c3a7c878e67b2750f464e3708 (diff) | |
google/chromeos: Add a library to get DSM calibration data
On ChromeOS, there will be VPD values for dynamic speaker management (DSM)
calibration data. They are resistor calibration values and temperature
during calibration.
These VPD fields use "dsm_calib_" prefix.
Known keys are:
"dsm_calib_r0_0"
"dsm_calib_r0_1"
"dsm_calib_r0_2"
"dsm_calib_r0_3"
"dsm_calib_temp_0"
For now these values are unsigned decimal numbers greater than 0.
This library will be used for RT1011 device driver in the patch series.
Note that in the future we may encode more values into this VPD field if
needed. We retain the flexibility for coreboot device driver or codec
driver to decode/parse the VPD values based on the needed use case
per-board.
BUG=b:140397934
BRANCH=none
TEST=On Helios, with patch series, check realtek,r0_calib and
realtek,temperature_calib are available to rt1011 codec driver.
Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org>
Change-Id: Ib9579a5cc055f8f438cb30a8acaf250a343db19e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36028
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/vendorcode/google/chromeos/Kconfig')
| -rw-r--r-- | src/vendorcode/google/chromeos/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/vendorcode/google/chromeos/Kconfig b/src/vendorcode/google/chromeos/Kconfig index 2ff7ec70b8..cdb4305fdd 100644 --- a/src/vendorcode/google/chromeos/Kconfig +++ b/src/vendorcode/google/chromeos/Kconfig @@ -95,5 +95,14 @@ config CHROMEOS_USE_EC_WATCHDOG_FLAG help Use the AP watchdog flag stored in EC. +config CHROMEOS_DSM_CALIB + bool + default n + help + On some boards, there are calibrated parameters for Dynamic Speaker Management(DSM) + stored in VPD. Enable this config to read and parse these VPD values and write them + to ACPI DSD table in device driver. These parameters will be applied by kernel driver + through device property at boot. + endif # CHROMEOS endmenu |