The Brcmstb PCIe RC uses a reset control "rescal" for certain chips. This reset implements a "pulse reset" so it matches more the reset/rearm calls instead of the deassert/assert calls. Also, add reset_control calls in suspend/resume functions. Signed-off-by: Jim Quinlan <james.quinlan@xxxxxxxxxxxx> --- drivers/pci/controller/pcie-brcmstb.c | 19 +++++++++++++------ 1 file changed, 13 insertions(+), 6 deletions(-) diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c index bea86899bd5d..b9745ac2ee0b 100644 --- a/drivers/pci/controller/pcie-brcmstb.c +++ b/drivers/pci/controller/pcie-brcmstb.c @@ -1138,6 +1138,7 @@ static int brcm_pcie_suspend(struct device *dev) brcm_pcie_turn_off(pcie); ret = brcm_phy_stop(pcie); + reset_control_rearm(pcie->rescal); clk_disable_unprepare(pcie->clk); return ret; @@ -1153,9 +1154,13 @@ static int brcm_pcie_resume(struct device *dev) base = pcie->base; clk_prepare_enable(pcie->clk); + ret = reset_control_reset(pcie->rescal); + if (ret) + goto err0; + ret = brcm_phy_start(pcie); if (ret) - goto err; + goto err1; /* Take bridge out of reset so we can access the SERDES reg */ pcie->bridge_sw_init_set(pcie, 0); @@ -1170,14 +1175,16 @@ static int brcm_pcie_resume(struct device *dev) ret = brcm_pcie_setup(pcie); if (ret) - goto err; + goto err1; if (pcie->msi) brcm_msi_set_regs(pcie->msi); return 0; -err: +err1: + reset_control_rearm(pcie->rescal); +err0: clk_disable_unprepare(pcie->clk); return ret; } @@ -1187,7 +1194,7 @@ static void __brcm_pcie_remove(struct brcm_pcie *pcie) brcm_msi_remove(pcie); brcm_pcie_turn_off(pcie); brcm_phy_stop(pcie); - reset_control_assert(pcie->rescal); + reset_control_rearm(pcie->rescal); clk_disable_unprepare(pcie->clk); } @@ -1262,13 +1269,13 @@ static int brcm_pcie_probe(struct platform_device *pdev) return PTR_ERR(pcie->rescal); } - ret = reset_control_deassert(pcie->rescal); + ret = reset_control_reset(pcie->rescal); if (ret) dev_err(&pdev->dev, "failed to deassert 'rescal'\n"); ret = brcm_phy_start(pcie); if (ret) { - reset_control_assert(pcie->rescal); + reset_control_rearm(pcie->rescal); clk_disable_unprepare(pcie->clk); return ret; } -- 2.17.1
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