evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

mfd: qcom_rpm: write fw_version to CTRL_REG

Browse source 
[ Upstream commit 504e4175829c44328773b96ad9c538e4783a8d22 ]

This is required as part of the initialization sequence on certain SoCs.

If these registers are not initialized, the hardware can be unresponsive.
This fixes the driver on apq8060 (HP TouchPad device).

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jonathan Marek 2018-11-19 14:53:17 -05:00 • committed by Greg Kroah-Hartman
parent c02e9400dc
commit 6a422b0676
1 changed files with 4 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/mfd/qcom_rpm.c
View file

@ -570,6 +570,10 @@ static int qcom_rpm_probe(struct platform_device *pdev)
return -EFAULT;
}
writel(fw_version[0], RPM_CTRL_REG(rpm, 0));
writel(fw_version[1], RPM_CTRL_REG(rpm, 1));
writel(fw_version[2], RPM_CTRL_REG(rpm, 2));
dev_info(&pdev->dev, "RPM firmware %u.%u.%u\n", fw_version[0],
fw_version[1],
fw_version[2]);