mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 17:01:14 +00:00
60 lines
1.8 KiB
Diff
60 lines
1.8 KiB
Diff
|
From 4910cfd150342ec7b038892262923c725a9c4001 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Sham Muthayyan <smuthayy@codeaurora.org>
|
||
|
|
Date: Wed, 7 Sep 2016 16:44:28 +0530
|
||
|
|
Subject: PCI: qcom: Force GEN1 support
|
||
|
|
|
||
|
|
Change-Id: Ica54ddb737d7b851469deab1745f54bf431bd3f0
|
||
|
|
Signed-off-by: Sham Muthayyan <smuthayy@codeaurora.org>
|
||
|
|
---
|
||
|
|
|
||
|
|
--- a/drivers/pci/controller/dwc/pcie-qcom.c
|
||
|
|
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
|
||
|
|
@@ -122,6 +122,8 @@
|
||
|
|
#define PCIE20_v3_PARF_SLV_ADDR_SPACE_SIZE 0x358
|
||
|
|
#define SLV_ADDR_SPACE_SZ 0x10000000
|
||
|
|
|
||
|
|
+#define PCIE20_LNK_CONTROL2_LINK_STATUS2 0xA0
|
||
|
|
+
|
||
|
|
#define QCOM_PCIE_2_1_0_MAX_SUPPLY 3
|
||
|
|
struct qcom_pcie_resources_2_1_0 {
|
||
|
|
struct clk *iface_clk;
|
||
|
|
@@ -212,6 +214,7 @@ struct qcom_pcie {
|
||
|
|
struct phy *phy;
|
||
|
|
struct gpio_desc *reset;
|
||
|
|
const struct qcom_pcie_ops *ops;
|
||
|
|
+ uint32_t force_gen1;
|
||
|
|
};
|
||
|
|
|
||
|
|
#define to_qcom_pcie(x) dev_get_drvdata((x)->dev)
|
||
|
|
@@ -504,6 +507,11 @@ static int qcom_pcie_init_2_1_0(struct q
|
||
|
|
|
||
|
|
/* wait for clock acquisition */
|
||
|
|
usleep_range(1000, 1500);
|
||
|
|
+ if (pcie->force_gen1) {
|
||
|
|
+ writel_relaxed((readl_relaxed(
|
||
|
|
+ pcie->pci->dbi_base + PCIE20_LNK_CONTROL2_LINK_STATUS2) | 1),
|
||
|
|
+ pcie->pci->dbi_base + PCIE20_LNK_CONTROL2_LINK_STATUS2);
|
||
|
|
+ }
|
||
|
|
|
||
|
|
|
||
|
|
/* Set the Max TLP size to 2K, instead of using default of 4K */
|
||
|
|
@@ -1367,6 +1375,8 @@ static int qcom_pcie_probe(struct platfo
|
||
|
|
struct dw_pcie *pci;
|
||
|
|
struct qcom_pcie *pcie;
|
||
|
|
int ret;
|
||
|
|
+ uint32_t force_gen1 = 0;
|
||
|
|
+ struct device_node *np = pdev->dev.of_node;
|
||
|
|
|
||
|
|
pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
|
||
|
|
if (!pcie)
|
||
|
|
@@ -1397,6 +1407,9 @@ static int qcom_pcie_probe(struct platfo
|
||
|
|
goto err_pm_runtime_put;
|
||
|
|
}
|
||
|
|
|
||
|
|
+ of_property_read_u32(np, "force_gen1", &force_gen1);
|
||
|
|
+ pcie->force_gen1 = force_gen1;
|
||
|
|
+
|
||
|
|
res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "parf");
|
||
|
|
pcie->parf = devm_ioremap_resource(dev, res);
|
||
|
|
if (IS_ERR(pcie->parf)) {
|