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Documentation: sysfs: Document Broadcom STB memc sysfs knobs 

Document the "srpd" and "frequency" sysfs attributes exposed by
the brcmstb_memc driver.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220812222533.2428033-3-f.fainelli@gmail.com
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Florian Fainelli 2022-08-12 15:25:32 -07:00 committed by Krzysztof Kozlowski
parent fa0321ba51
commit e3a1b9245e
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What: /sys/bus/platform/devices/*/srpd
Date: July 2022
KernelVersion: 5.21
Contact: Florian Fainelli <f.fainelli@gmail.com>
Description:
Self Refresh Power Down (SRPD) inactivity timeout counted in
internal DDR controller clock cycles. Possible values range
from 0 (disable inactivity timeout) to 65535 (0xffff).
What: /sys/bus/platform/devices/*/frequency
Date: July 2022
KernelVersion: 5.21
Contact: Florian Fainelli <f.fainelli@gmail.com>
Description:
DDR PHY frequency in Hz.