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Commit 33164ae0 authored by Tony Truong's avatar Tony Truong
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msm: pcie: configure PCIe PHY registers for when PCIe link is 


turned off

Configure PCIe PHY registers to support low power mode when PCIe
link is turned off.

Change-Id: I4cd5efe628fccf77a9d3b2acea37a57cc1ad9aa7
Signed-off-by: default avatarTony Truong <truong@codeaurora.org>
parent 9a2269f8

drivers/pci/host/pci-msm.c

+5 −0
Original line number Diff line number Diff line
@@ -2008,6 +2008,8 @@ int msm_pcie_enable(struct msm_pcie_dev_t *dev, u32 options) 
	goto out;



link_fail:

	msm_pcie_write_reg(dev->phy, PCIE_PHY_SW_RESET, 0x1);

	msm_pcie_write_reg(dev->phy, PCIE_PHY_POWER_DOWN_CONTROL, 0);

	msm_pcie_clk_deinit(dev);

clk_fail:

	msm_pcie_vreg_deinit(dev);
@@ -2041,6 +2043,9 @@ void msm_pcie_disable(struct msm_pcie_dev_t *dev, u32 options) 
	gpio_set_value(dev->gpio[MSM_PCIE_GPIO_PERST].num,

				dev->gpio[MSM_PCIE_GPIO_PERST].on);



	msm_pcie_write_reg(dev->phy, PCIE_PHY_SW_RESET, 0x1);

	msm_pcie_write_reg(dev->phy, PCIE_PHY_POWER_DOWN_CONTROL, 0);



	if (options & PM_CLK) {

		msm_pcie_write_mask(dev->parf + PCIE20_PARF_PHY_CTRL, 0,

					BIT(0));