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From: Ansuel Smith <ansuelsmth@gmail.com>
To: Rob Herring <robh+dt@kernel.org>
Cc: Vinod Koul <vkoul@kernel.org>,
	Abhishek Sahu <absahu@codeaurora.org>,
	Ansuel Smith <ansuelsmth@gmail.com>,
	Rob Herring <robh@kernel.org>, Andy Gross <agross@kernel.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Stanimir Varbanov <svarbanov@mm-sol.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Andrew Murray <amurray@thegoodpenguin.co.uk>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v7 03/12] PCI: qcom: Change duplicate PCI reset to phy reset
Date: Mon, 15 Jun 2020 23:05:59 +0200	[thread overview]
Message-ID: <20200615210608.21469-4-ansuelsmth@gmail.com> (raw)
In-Reply-To: <20200615210608.21469-1-ansuelsmth@gmail.com>

From: Abhishek Sahu <absahu@codeaurora.org>

The deinit issues reset_control_assert for PCI twice and does not contain
phy reset.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 drivers/pci/controller/dwc/pcie-qcom.c | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 4bf93ab8c7a7..4512c2c5f61c 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -280,14 +280,14 @@ static void qcom_pcie_deinit_2_1_0(struct qcom_pcie *pcie)
 {
 	struct qcom_pcie_resources_2_1_0 *res = &pcie->res.v2_1_0;
 
+	clk_disable_unprepare(res->phy_clk);
 	reset_control_assert(res->pci_reset);
 	reset_control_assert(res->axi_reset);
 	reset_control_assert(res->ahb_reset);
 	reset_control_assert(res->por_reset);
-	reset_control_assert(res->pci_reset);
+	reset_control_assert(res->phy_reset);
 	clk_disable_unprepare(res->iface_clk);
 	clk_disable_unprepare(res->core_clk);
-	clk_disable_unprepare(res->phy_clk);
 	clk_disable_unprepare(res->aux_clk);
 	clk_disable_unprepare(res->ref_clk);
 	regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies);
@@ -325,12 +325,6 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie)
 		goto err_clk_core;
 	}
 
-	ret = clk_prepare_enable(res->phy_clk);
-	if (ret) {
-		dev_err(dev, "cannot prepare/enable phy clock\n");
-		goto err_clk_phy;
-	}
-
 	ret = clk_prepare_enable(res->aux_clk);
 	if (ret) {
 		dev_err(dev, "cannot prepare/enable aux clock\n");
@@ -383,6 +377,12 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie)
 		return ret;
 	}
 
+	ret = clk_prepare_enable(res->phy_clk);
+	if (ret) {
+		dev_err(dev, "cannot prepare/enable phy clock\n");
+		goto err_deassert_ahb;
+	}
+
 	/* wait for clock acquisition */
 	usleep_range(1000, 1500);
 
@@ -400,8 +400,6 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie)
 err_clk_ref:
 	clk_disable_unprepare(res->aux_clk);
 err_clk_aux:
-	clk_disable_unprepare(res->phy_clk);
-err_clk_phy:
 	clk_disable_unprepare(res->core_clk);
 err_clk_core:
 	clk_disable_unprepare(res->iface_clk);
-- 
2.27.0.rc0


  parent reply	other threads:[~2020-06-15 21:06 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-15 21:05 [PATCH v7 00/12] Multiple fixes in PCIe qcom driver Ansuel Smith
2020-06-15 21:05 ` [PATCH v7 01/12] PCI: qcom: Add missing ipq806x clocks in PCIe driver Ansuel Smith
2020-06-15 21:05 ` [PATCH v7 02/12] dt-bindings: PCI: qcom: Add missing clks Ansuel Smith
2020-06-15 21:05 ` Ansuel Smith [this message]
2020-06-15 21:06 ` [PATCH v7 04/12] PCI: qcom: Add missing reset for ipq806x Ansuel Smith
2020-06-15 21:06 ` [PATCH v7 05/12] dt-bindings: PCI: qcom: Add ext reset Ansuel Smith
2020-06-15 21:06 ` [PATCH v7 06/12] PCI: qcom: Use bulk clk api and assert on error Ansuel Smith
2020-06-15 21:06 ` [PATCH v7 07/12] PCI: qcom: Define some PARF params needed for ipq8064 SoC Ansuel Smith
2020-06-15 21:06 ` [PATCH v7 08/12] PCI: qcom: Add support for tx term offset for rev 2.1.0 Ansuel Smith
2020-06-15 21:06 ` [PATCH v7 09/12] PCI: qcom: Add ipq8064 rev2 variant Ansuel Smith
2020-06-15 21:06 ` [PATCH v7 10/12] dt-bindings: PCI: qcom: Add ipq8064 rev 2 variant Ansuel Smith
2020-06-15 21:06 ` [PATCH v7 11/12] PCI: qcom: Support pci speed set for ipq806x Ansuel Smith
2020-06-15 21:06 ` [PATCH v7 12/12] PCI: qcom: Replace define with standard value Ansuel Smith
2020-06-25 23:37 ` [PATCH v7 00/12] Multiple fixes in PCIe qcom driver Stanimir Varbanov
2020-07-07 14:05 ` Lorenzo Pieralisi
2020-07-07 14:57   ` Stanimir Varbanov
2020-07-07 15:15 ` Lorenzo Pieralisi

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