Linux PCI subsystem development
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From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: "Stanimir Varbanov" <svarbanov@mm-sol.com>,
	"Lorenzo Pieralisi" <lorenzo.pieralisi@arm.com>,
	"Rob Herring" <robh@kernel.org>,
	"Krzysztof Wilczyński" <kw@linux.com>,
	"Bjorn Helgaas" <bhelgaas@google.com>,
	"Dmitry Baryshkov" <dmitry.baryshkov@linaro.org>
Cc: linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH] PCI: qcom: Remove ddrss_sf_tbu clock from sc8180x
Date: Wed, 30 Mar 2022 18:34:15 -0700	[thread overview]
Message-ID: <20220331013415.592748-1-bjorn.andersson@linaro.org> (raw)

The Qualcomm SC8180X platform was piggy backing on the SM8250
qcom_pcie_cfg, but the platform doesn't have the ddrss_sf_tbu clock, so
it now fails to probe due to the missing clock.

Give SC8180X its own qcom_pcie_cfg, without the ddrss_sf_tbu flag set.

Fixes: 0614f98bbb9f ("PCI: qcom: Add ddrss_sf_tbu flag")
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---
 drivers/pci/controller/dwc/pcie-qcom.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index 6ab90891801d..816028c0f6ed 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -1550,6 +1550,11 @@ static const struct qcom_pcie_cfg sc7280_cfg = {
 	.pipe_clk_need_muxing = true,
 };
 
+static const struct qcom_pcie_cfg sc8180x_cfg = {
+	.ops = &ops_1_9_0,
+	.has_tbu_clk = true,
+};
+
 static const struct dw_pcie_ops dw_pcie_ops = {
 	.link_up = qcom_pcie_link_up,
 	.start_link = qcom_pcie_start_link,
@@ -1656,7 +1661,7 @@ static const struct of_device_id qcom_pcie_match[] = {
 	{ .compatible = "qcom,pcie-qcs404", .data = &ipq4019_cfg },
 	{ .compatible = "qcom,pcie-sdm845", .data = &sdm845_cfg },
 	{ .compatible = "qcom,pcie-sm8250", .data = &sm8250_cfg },
-	{ .compatible = "qcom,pcie-sc8180x", .data = &sm8250_cfg },
+	{ .compatible = "qcom,pcie-sc8180x", .data = &sc8180x_cfg },
 	{ .compatible = "qcom,pcie-sm8450-pcie0", .data = &sm8450_pcie0_cfg },
 	{ .compatible = "qcom,pcie-sm8450-pcie1", .data = &sm8450_pcie1_cfg },
 	{ .compatible = "qcom,pcie-sc7280", .data = &sc7280_cfg },
-- 
2.35.1


             reply	other threads:[~2022-03-31  1:31 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-31  1:34 Bjorn Andersson [this message]
2022-04-19 16:34 ` [PATCH] PCI: qcom: Remove ddrss_sf_tbu clock from sc8180x Bjorn Andersson
2022-04-19 18:06 ` Dmitry Baryshkov
2022-04-20  8:44 ` Stanimir Varbanov
2022-05-03 17:35 ` Steev Klimaszewski
2022-05-03 22:43 ` Bjorn Helgaas

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