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From: Ansuel Smith <ansuelsmth@gmail.com>
To: Stanimir Varbanov <svarbanov@mm-sol.com>
Cc: Ansuel Smith <ansuelsmth@gmail.com>,
	Sham Muthayyan <smuthayy@codeaurora.org>,
	Andy Gross <agross@kernel.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.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 01/12] pcie: qcom: add missing ipq806x clocks in pcie driver
Date: Fri, 20 Mar 2020 19:34:43 +0100	[thread overview]
Message-ID: <20200320183455.21311-1-ansuelsmth@gmail.com> (raw)

Aux and Ref clk are missing in pcie qcom driver.
Add support in the driver to fix pcie inizialization
in ipq806x

Signed-off-by: Sham Muthayyan <smuthayy@codeaurora.org>
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
---
 drivers/pci/controller/dwc/pcie-qcom.c | 38 ++++++++++++++++++++++----
 1 file changed, 33 insertions(+), 5 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 5ea527a6bd9f..f958c535de6e 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -88,6 +88,8 @@ struct qcom_pcie_resources_2_1_0 {
 	struct clk *iface_clk;
 	struct clk *core_clk;
 	struct clk *phy_clk;
+	struct clk *aux_clk;
+	struct clk *ref_clk;
 	struct reset_control *pci_reset;
 	struct reset_control *axi_reset;
 	struct reset_control *ahb_reset;
@@ -246,6 +248,14 @@ static int qcom_pcie_get_resources_2_1_0(struct qcom_pcie *pcie)
 	if (IS_ERR(res->phy_clk))
 		return PTR_ERR(res->phy_clk);
 
+	res->aux_clk = devm_clk_get(dev, "aux");
+	if (IS_ERR(res->aux_clk))
+		return PTR_ERR(res->aux_clk);
+
+	res->ref_clk = devm_clk_get(dev, "ref");
+	if (IS_ERR(res->ref_clk))
+		return PTR_ERR(res->ref_clk);
+
 	res->pci_reset = devm_reset_control_get_exclusive(dev, "pci");
 	if (IS_ERR(res->pci_reset))
 		return PTR_ERR(res->pci_reset);
@@ -278,6 +288,8 @@ static void qcom_pcie_deinit_2_1_0(struct qcom_pcie *pcie)
 	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);
 }
 
@@ -307,16 +319,28 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie)
 		goto err_assert_ahb;
 	}
 
+	ret = clk_prepare_enable(res->core_clk);
+	if (ret) {
+		dev_err(dev, "cannot prepare/enable core clock\n");
+		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->core_clk);
+	ret = clk_prepare_enable(res->aux_clk);
 	if (ret) {
-		dev_err(dev, "cannot prepare/enable core clock\n");
-		goto err_clk_core;
+		dev_err(dev, "cannot prepare/enable aux clock\n");
+		goto err_clk_aux;
+	}
+
+	ret = clk_prepare_enable(res->ref_clk);
+	if (ret) {
+		dev_err(dev, "cannot prepare/enable ref clock\n");
+		goto err_clk_ref;
 	}
 
 	ret = reset_control_deassert(res->ahb_reset);
@@ -372,10 +396,14 @@ static int qcom_pcie_init_2_1_0(struct qcom_pcie *pcie)
 	return 0;
 
 err_deassert_ahb:
-	clk_disable_unprepare(res->core_clk);
-err_clk_core:
+	clk_disable_unprepare(res->ref_clk);
+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);
 err_assert_ahb:
 	regulator_bulk_disable(ARRAY_SIZE(res->supplies), res->supplies);
-- 
2.25.1


             reply	other threads:[~2020-03-20 18:35 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-20 18:34 Ansuel Smith [this message]
2020-03-20 18:34 ` [PATCH 02/12] devicetree: bindings: pci: add missing clks to qcom,pcie Ansuel Smith
2020-03-31 17:30   ` Rob Herring
2020-03-20 18:34 ` [PATCH 03/12] pcie: qcom: change duplicate pci reset to phy reset Ansuel Smith
2020-03-20 18:34 ` [PATCH 04/12] pcie: qcom: Fixed pcie_phy_clk branch issue Ansuel Smith
2020-03-20 18:34 ` [PATCH 05/12] pcie: qcom: add missing reset for ipq806x Ansuel Smith
2020-03-20 18:51   ` Bjorn Helgaas
2020-03-23  6:06   ` Philipp Zabel
2020-03-20 18:34 ` [PATCH 06/12] devicetree: bindings: pci: add ext reset to qcom,pcie Ansuel Smith
2020-03-31 17:31   ` Rob Herring
2020-03-20 18:34 ` [PATCH 07/12] pcie: qcom: add tx term offset support Ansuel Smith
2020-03-20 19:22   ` Bjorn Helgaas
2020-04-01 20:40   ` Bjorn Andersson
2020-04-01 21:55     ` R: " ansuelsmth
2020-04-01 23:52       ` Bjorn Andersson
2020-03-20 18:34 ` [PATCH 08/12] devicetree: bindings: pci: add phy-tx0-term-offset to qcom,pcie Ansuel Smith
2020-03-31 17:32   ` Rob Herring
2020-04-01 12:09     ` R: " ansuelsmth
2020-04-01 20:41   ` Bjorn Andersson
2020-03-20 18:34 ` [PATCH 09/12] pcie: qcom: Programming the PCIE iATU for IPQ806x Ansuel Smith
2020-03-20 19:26   ` Bjorn Helgaas
2020-04-01 13:21   ` Stanimir Varbanov
2020-03-20 18:34 ` [PATCH 10/12] pcie: qcom: add Force GEN1 support Ansuel Smith
2020-03-20 19:37   ` Bjorn Helgaas
2020-03-20 18:34 ` [PATCH 11/12] devicetree: bindings: pci: add force_gen1 for qcom,pcie Ansuel Smith
2020-03-31 17:33   ` Rob Herring
2020-04-01 12:09     ` R: " ansuelsmth
2020-04-01 13:17   ` Stanimir Varbanov
2020-03-20 18:34 ` [PATCH 12/12] pcie: qcom: Set PCIE MRRS and MPS to 256B Ansuel Smith
2020-03-20 19:46   ` Bjorn Helgaas
2020-03-20 18:47 ` [PATCH 01/12] pcie: qcom: add missing ipq806x clocks in pcie driver Bjorn Helgaas
2020-04-01 13:01 ` Stanimir Varbanov

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