The 7712 SOC adds a software init reset device for the PCIe HW.
If found in the DT node, use it.
Signed-off-by: Jim Quinlan <james.quinlan@xxxxxxxxxxxx>
Reviewed-by: Stanimir Varbanov <svarbanov@xxxxxxx>
Reviewed-by: Florian Fainelli <florian.fainelli@xxxxxxxxxxxx>
---
drivers/pci/controller/pcie-brcmstb.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
index 92816d8d215a..4dc2ff7f3167 100644
--- a/drivers/pci/controller/pcie-brcmstb.c
+++ b/drivers/pci/controller/pcie-brcmstb.c
@@ -266,6 +266,7 @@ struct brcm_pcie {
struct reset_control *rescal;
struct reset_control *perst_reset;
struct reset_control *bridge;
+ struct reset_control *swinit;
int num_memc;
u64 memc_size[PCIE_BRCM_MAX_MEMC];
u32 hw_rev;
@@ -1633,12 +1634,27 @@ static int brcm_pcie_probe(struct platform_device *pdev)
if (IS_ERR(pcie->bridge))
return PTR_ERR(pcie->bridge);
+ pcie->swinit = devm_reset_control_get_optional_exclusive(&pdev->dev, "swinit");
+ if (IS_ERR(pcie->swinit))
+ return PTR_ERR(pcie->swinit);
+
ret = clk_prepare_enable(pcie->clk);
if (ret) {
dev_err(&pdev->dev, "could not enable clock\n");
return ret;
}
+ ret = reset_control_assert(pcie->swinit);
+ if (ret) {
+ dev_err_probe(&pdev->dev, ret, "could not assert reset 'swinit'\n");
+ goto clk_out;
+ }
+ ret = reset_control_deassert(pcie->swinit);
+ if (ret) {
+ dev_err(&pdev->dev, "could not de-assert reset 'swinit' after asserting\n");
+ goto clk_out;
+ }
+
ret = reset_control_reset(pcie->rescal);
if (ret) {
dev_err(&pdev->dev, "failed to deassert 'rescal'\n");
--
2.17.1
Attachment:
smime.p7s
Description: S/MIME Cryptographic Signature
