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From: Richard Zhu <hongxing.zhu@nxp.com>
To: kw@linux.com, manivannan.sadhasivam@linaro.org,
	bhelgaas@google.com, lpieralisi@kernel.org, frank.li@nxp.com,
	l.stach@pengutronix.de, robh+dt@kernel.org, conor+dt@kernel.org,
	shawnguo@kernel.org, krzysztof.kozlowski+dt@linaro.org,
	festevam@gmail.com, s.hauer@pengutronix.de
Cc: hongxing.zhu@nxp.com, linux-pci@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
	kernel@pengutronix.de, imx@lists.linux.dev
Subject: [PATCH v4 6/9] PCI: imx6: Make *_enable_ref_clk() function symmetric
Date: Tue, 15 Oct 2024 16:33:30 +0800	[thread overview]
Message-ID: <1728981213-8771-7-git-send-email-hongxing.zhu@nxp.com> (raw)
In-Reply-To: <1728981213-8771-1-git-send-email-hongxing.zhu@nxp.com>

Ensure the *_enable_ref_clk() function is symmetric by addressing missing
disable parts on some platforms. Also, remove the duplicate
imx7d_pcie_init_phy() function as it is the same as
imx7d_pcie_enable_ref_clk().

Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
---
 drivers/pci/controller/dwc/pci-imx6.c | 33 +++++++++++----------------
 1 file changed, 13 insertions(+), 20 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 93e2bcf9aa0a..161daad34a94 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -388,13 +388,6 @@ static int imx8mq_pcie_init_phy(struct imx_pcie *imx_pcie)
 	return 0;
 }
 
-static int imx7d_pcie_init_phy(struct imx_pcie *imx_pcie)
-{
-	regmap_update_bits(imx_pcie->iomuxc_gpr, IOMUXC_GPR12, IMX7D_GPR12_PCIE_PHY_REFCLK_SEL, 0);
-
-	return 0;
-}
-
 static int imx_pcie_init_phy(struct imx_pcie *imx_pcie)
 {
 	regmap_update_bits(imx_pcie->iomuxc_gpr, IOMUXC_GPR12,
@@ -593,13 +586,13 @@ static int imx_pcie_attach_pd(struct device *dev)
 
 static int imx6sx_pcie_enable_ref_clk(struct imx_pcie *imx_pcie, bool enable)
 {
-	if (enable)
-		regmap_clear_bits(imx_pcie->iomuxc_gpr, IOMUXC_GPR12,
-				  IMX6SX_GPR12_PCIE_TEST_POWERDOWN);
-
+	regmap_update_bits(imx_pcie->iomuxc_gpr, IOMUXC_GPR12,
+			   IMX6SX_GPR12_PCIE_TEST_POWERDOWN,
+			   enable ? 0 : IMX6SX_GPR12_PCIE_TEST_POWERDOWN);
 	return 0;
 }
 
+
 static int imx6q_pcie_enable_ref_clk(struct imx_pcie *imx_pcie, bool enable)
 {
 	if (enable) {
@@ -625,19 +618,20 @@ static int imx8mm_pcie_enable_ref_clk(struct imx_pcie *imx_pcie, bool enable)
 {
 	int offset = imx_pcie_grp_offset(imx_pcie);
 
-	if (enable) {
-		regmap_clear_bits(imx_pcie->iomuxc_gpr, offset, IMX8MQ_GPR_PCIE_CLK_REQ_OVERRIDE);
-		regmap_set_bits(imx_pcie->iomuxc_gpr, offset, IMX8MQ_GPR_PCIE_CLK_REQ_OVERRIDE_EN);
-	}
-
+	regmap_update_bits(imx_pcie->iomuxc_gpr, offset,
+			   IMX8MQ_GPR_PCIE_CLK_REQ_OVERRIDE,
+			   enable ? 0 : IMX8MQ_GPR_PCIE_CLK_REQ_OVERRIDE);
+	regmap_update_bits(imx_pcie->iomuxc_gpr, offset,
+			   IMX8MQ_GPR_PCIE_CLK_REQ_OVERRIDE_EN,
+			   enable ? IMX8MQ_GPR_PCIE_CLK_REQ_OVERRIDE_EN : 0);
 	return 0;
 }
 
 static int imx7d_pcie_enable_ref_clk(struct imx_pcie *imx_pcie, bool enable)
 {
-	if (!enable)
-		regmap_set_bits(imx_pcie->iomuxc_gpr, IOMUXC_GPR12,
-				IMX7D_GPR12_PCIE_PHY_REFCLK_SEL);
+	regmap_update_bits(imx_pcie->iomuxc_gpr, IOMUXC_GPR12,
+			   IMX7D_GPR12_PCIE_PHY_REFCLK_SEL,
+			   enable ? 0 : IMX7D_GPR12_PCIE_PHY_REFCLK_SEL);
 	return 0;
 }
 
@@ -1522,7 +1516,6 @@ static const struct imx_pcie_drvdata drvdata[] = {
 		.clks_cnt = ARRAY_SIZE(imx6q_clks),
 		.mode_off[0] = IOMUXC_GPR12,
 		.mode_mask[0] = IMX6Q_GPR12_DEVICE_TYPE,
-		.init_phy = imx7d_pcie_init_phy,
 		.enable_ref_clk = imx7d_pcie_enable_ref_clk,
 		.core_reset = imx7d_pcie_core_reset,
 	},
-- 
2.37.1


  parent reply	other threads:[~2024-10-15  8:57 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-10-15  8:33 [PATCH v4 0/9] A bunch of changes to refine i.MX PCIe driver Richard Zhu
2024-10-15  8:33 ` [PATCH v4 1/9] dt-bindings: imx6q-pcie: Add ref clock for i.MX95 PCIe RC Richard Zhu
2024-10-18 23:13   ` Bjorn Helgaas
2024-10-21 15:26     ` Frank Li
2024-10-22 16:38     ` Manivannan Sadhasivam
2024-10-15  8:33 ` [PATCH v4 2/9] PCI: imx6: Add ref clock for i.MX95 PCIe Richard Zhu
2024-10-22 16:46   ` Manivannan Sadhasivam
2024-10-24  7:42     ` Hongxing Zhu
2024-10-15  8:33 ` [PATCH v4 3/9] PCI: imx6: Fetch dbi2 and iATU base addesses from DT Richard Zhu
2024-10-22 16:48   ` Manivannan Sadhasivam
2024-10-22 19:56     ` Frank Li
2024-10-15  8:33 ` [PATCH v4 4/9] PCI: imx6: Correct controller_id generation logic for i.MX7D Richard Zhu
2024-10-22 16:55   ` Manivannan Sadhasivam
2024-10-24  7:42     ` Hongxing Zhu
2024-10-15  8:33 ` [PATCH v4 5/9] PCI: imx6: Make core reset assertion deassertion symmetric Richard Zhu
2024-10-22 16:59   ` Manivannan Sadhasivam
2024-10-15  8:33 ` Richard Zhu [this message]
2024-10-22 17:05   ` [PATCH v4 6/9] PCI: imx6: Make *_enable_ref_clk() function symmetric Manivannan Sadhasivam
2024-10-15  8:33 ` [PATCH v4 7/9] PCI: imx6: Use dwc common suspend resume method Richard Zhu
2024-10-22 17:18   ` Manivannan Sadhasivam
2024-10-22 19:42     ` Frank Li
2024-10-24  7:43     ` Hongxing Zhu
2024-10-15  8:33 ` [PATCH v4 8/9] PCI: imx6: Add i.MX8MQ i.MX8Q and i.MX95 PCIe PM support Richard Zhu
2024-10-15  8:33 ` [PATCH v4 9/9] arm64: dts: imx95: Add ref clock for i.MX95 PCIe Richard Zhu
2024-10-22 17:20   ` Manivannan Sadhasivam
2024-10-18  1:39 ` [PATCH v4 0/9] A bunch of changes to refine i.MX PCIe driver Hongxing Zhu

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