mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-30 10:39:04 +00:00
42 lines
1.3 KiB
Diff
42 lines
1.3 KiB
Diff
|
From 859c93981a8994ffa69967b44b247d2e7d6a01f1 Mon Sep 17 00:00:00 2001
|
||
|
|
From: INAGAKI Hiroshi <musashino.open@gmail.com>
|
||
|
|
Date: Fri, 26 Apr 2024 23:54:57 +0900
|
||
|
|
Subject: [PATCH 2/2] MIPS: pci-ar724x: deassert the reset of PCIe endpoint
|
||
|
|
|
||
|
|
Fix PCIe initialization by de-assertion of PCIe endpoint reset.
|
||
|
|
|
||
|
|
Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
|
||
|
|
---
|
||
|
|
|
||
|
|
--- a/arch/mips/pci/pci-ar724x.c
|
||
|
|
+++ b/arch/mips/pci/pci-ar724x.c
|
||
|
|
@@ -25,6 +25,7 @@
|
||
|
|
|
||
|
|
#define AR724X_PCI_APP_LTSSM_ENABLE BIT(0)
|
||
|
|
|
||
|
|
+#define AR724X_PCI_RESET_EP_RESET_L BIT(2)
|
||
|
|
#define AR724X_PCI_RESET_LINK_UP BIT(0)
|
||
|
|
|
||
|
|
#define AR724X_PCI_INT_DEV0 BIT(14)
|
||
|
|
@@ -340,7 +341,7 @@ static void ar724x_pci_irq_init(struct a
|
||
|
|
|
||
|
|
static void ar724x_pci_hw_init(struct ar724x_pci_controller *apc)
|
||
|
|
{
|
||
|
|
- u32 ppl, app;
|
||
|
|
+ u32 ppl, rst, app;
|
||
|
|
int wait = 0;
|
||
|
|
|
||
|
|
/* deassert PCIe host controller and PCIe PHY reset */
|
||
|
|
@@ -370,6 +371,11 @@ static void ar724x_pci_hw_init(struct ar
|
||
|
|
ath79_pll_wr(AR724X_PLL_REG_PCIE_CONFIG, ppl);
|
||
|
|
}
|
||
|
|
|
||
|
|
+ /* deassert the reset state of the PCIE endpoint */
|
||
|
|
+ rst = __raw_readl(apc->ctrl_base + AR724X_PCI_REG_RESET);
|
||
|
|
+ rst |= AR724X_PCI_RESET_EP_RESET_L;
|
||
|
|
+ __raw_writel(rst, apc->ctrl_base + AR724X_PCI_REG_RESET);
|
||
|
|
+
|
||
|
|
/* set PCIE Application Control to ready */
|
||
|
|
app = __raw_readl(apc->ctrl_base + AR724X_PCI_REG_APP);
|
||
|
|
app |= AR724X_PCI_APP_LTSSM_ENABLE;
|