evie/android_kernel_oneplus_msm8998
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msm: ep_pcie: set up execution environment before link up

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Set up the execution environment before PCIe link training to
provide better adaptability to various hosts.

Change-Id: I72721d3b88a7e5b1a0a1f408da2228391559468e
Signed-off-by: Yan He <yanhe@codeaurora.org>
This commit is contained in:
Yan He 2015-12-07 18:20:35 -08:00 • committed by David Keitel
parent 161d538a82
commit ec62d30ab9
2 changed files with 6 additions and 0 deletions
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3
drivers/platform/msm/ep_pcie/ep_pcie_com.h
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@ -95,6 +95,9 @@
#define PCIE20_PLR_IATU_LTAR 0x918
#define PCIE20_PLR_IATU_UTAR 0x91c
#define PCIE20_MHICFG 0x110
#define PCIE20_BHI_EXECENV 0x228
#define PCIE20_AUX_CLK_FREQ_REG 0xB40
#define PERST_TIMEOUT_US_MIN 1000

3
drivers/platform/msm/ep_pcie/ep_pcie_core.c
View file

@ -557,6 +557,9 @@ static void ep_pcie_core_init(struct ep_pcie_dev_t *dev)
/* Configure BARs */
ep_pcie_bar_init(dev);
ep_pcie_write_reg(dev->mmio, PCIE20_MHICFG, 0x02800880);
ep_pcie_write_reg(dev->mmio, PCIE20_BHI_EXECENV, 0x2);
/* Configure IRQ events */
if (dev->aggregated_irq) {
ep_pcie_write_reg(dev->parf, PCIE20_PARF_INT_ALL_MASK, 0);