Commit 74c14405 authored by Jonathan Marek's avatar Jonathan Marek Committed by Greg Kroah-Hartman

mfd: qcom_rpm: write fw_version to CTRL_REG

[ 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: default avatarJonathan Marek <jonathan@marek.ca>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 8949511d
......@@ -638,6 +638,10 @@ 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]);
......
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