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authorLinus Walleij <linus.walleij@linaro.org>2016-08-18 20:40:45 +0200
committerLee Jones <lee.jones@linaro.org>2016-10-04 15:48:02 +0100
commit3526403353c2a1b94c3181f900582626d23c339b (patch)
tree3c784f6e23188b014d6138c867fc3a6d5ad050d4 /firmware
parent8c5d0571596efa5656cc53144172baa7c5c57b43 (diff)
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op-kernel-dev-3526403353c2a1b94c3181f900582626d23c339b.tar.gz
mfd: qcom_rpm: Handle message RAM clock
The MSM8660, APQ8060, IPQ806x and MSM8960 have a GCC clock to the message RAM used by the RPM. This needs to be enabled for messages to pass through. This is a crude solution that simply prepare/enable at probe() and disable/unprepare at remove(). More elaborate PM is probably possible to add later. The construction uses IS_ERR() to gracefully handle the platforms that do not provide a message RAM clock. It will bail out of probe only if the clock is hitting a probe deferral situation. Of course this requires the proper device tree set-up: rpm: rpm@104000 { compatible = "qcom,rpm-msm8660"; clocks = <&gcc RPM_MSG_RAM_H_CLK>; clock-names = "ram"; ... }; I have provided this in the MSM8660 device tree, and will provide patches for the other targets. Cc: Björn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'firmware')
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