Eric Lee / smarc-fsl-linux-kernel

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Commit 504e4175829c44328773b96ad9c538e4783a8d22

Authored by Jonathan Marek
Committed by Lee Jones
1 parent ac4ca4b9f4

mfd: qcom_rpm: write fw_version to CTRL_REG 

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>

Showing 1 changed file with 4 additions and 0 deletions Side-by-side Diff

drivers/mfd/qcom_rpm.c
Diff comments   View file @ 504e417
... ... @@ -638,6 +638,10 @@
638 638 return -EFAULT;
639 639 }
640 640  
  641 + writel(fw_version[0], RPM_CTRL_REG(rpm, 0));
  642 + writel(fw_version[1], RPM_CTRL_REG(rpm, 1));
  643 + writel(fw_version[2], RPM_CTRL_REG(rpm, 2));
  644 +
641 645 dev_info(&pdev->dev, "RPM firmware %u.%u.%u\n", fw_version[0],
642 646 fw_version[1],
643 647 fw_version[2]);