Commit 1e55c91f authored by flto's avatar flto Committed by Greg Kroah-Hartman

mfd: qcom_rpm: write fw_version to CTRL_REG

[ Upstream commit 504e4175 ]

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: flto's avatarJonathan Marek <>
Signed-off-by: 's avatarLee Jones <>
Signed-off-by: 's avatarSasha Levin <>
parent 8a483e3b
......@@ -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],
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