[PATCH 4/6] PCI: qcom: Add support for IPQ5018

From: Nitheesh Sekar
Date: Tue Oct 03 2023 - 08:10:05 EST


Added a new compatible 'qcom,pcie-ipq5018' and modified
get_resources of 'ops 2_9_0' to get the clocks from the
device-tree.

Co-developed-by: Anusha Rao <quic_anusha@xxxxxxxxxxx>
Signed-off-by: Anusha Rao <quic_anusha@xxxxxxxxxxx>
Co-developed-by: Devi Priya <quic_devipriy@xxxxxxxxxxx>
Signed-off-by: Devi Priya <quic_devipriy@xxxxxxxxxxx>
Signed-off-by: Nitheesh Sekar <quic_nsekar@xxxxxxxxxxx>
---
drivers/pci/controller/dwc/pcie-qcom.c | 22 ++++++++--------------
1 file changed, 8 insertions(+), 14 deletions(-)

diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
index e2f29404c84e..bb0717190920 100644
--- a/drivers/pci/controller/dwc/pcie-qcom.c
+++ b/drivers/pci/controller/dwc/pcie-qcom.c
@@ -197,10 +197,10 @@ struct qcom_pcie_resources_2_7_0 {
struct reset_control *rst;
};

-#define QCOM_PCIE_2_9_0_MAX_CLOCKS 5
struct qcom_pcie_resources_2_9_0 {
- struct clk_bulk_data clks[QCOM_PCIE_2_9_0_MAX_CLOCKS];
+ struct clk_bulk_data *clks;
struct reset_control *rst;
+ int num_clks;
};

union qcom_pcie_resources {
@@ -1048,17 +1048,10 @@ static int qcom_pcie_get_resources_2_9_0(struct qcom_pcie *pcie)
struct qcom_pcie_resources_2_9_0 *res = &pcie->res.v2_9_0;
struct dw_pcie *pci = pcie->pci;
struct device *dev = pci->dev;
- int ret;

- res->clks[0].id = "iface";
- res->clks[1].id = "axi_m";
- res->clks[2].id = "axi_s";
- res->clks[3].id = "axi_bridge";
- res->clks[4].id = "rchng";
-
- ret = devm_clk_bulk_get(dev, ARRAY_SIZE(res->clks), res->clks);
- if (ret < 0)
- return ret;
+ res->num_clks = devm_clk_bulk_get_all(dev, &res->clks);
+ if (res->num_clks < 0)
+ return res->num_clks;

res->rst = devm_reset_control_array_get_exclusive(dev);
if (IS_ERR(res->rst))
@@ -1071,7 +1064,7 @@ static void qcom_pcie_deinit_2_9_0(struct qcom_pcie *pcie)
{
struct qcom_pcie_resources_2_9_0 *res = &pcie->res.v2_9_0;

- clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks);
+ clk_bulk_disable_unprepare(res->num_clks, res->clks);
}

static int qcom_pcie_init_2_9_0(struct qcom_pcie *pcie)
@@ -1100,7 +1093,7 @@ static int qcom_pcie_init_2_9_0(struct qcom_pcie *pcie)

usleep_range(2000, 2500);

- return clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks);
+ return clk_bulk_prepare_enable(res->num_clks, res->clks);
}

static int qcom_pcie_post_init_2_9_0(struct qcom_pcie *pcie)
@@ -1605,6 +1598,7 @@ static const struct of_device_id qcom_pcie_match[] = {
{ .compatible = "qcom,pcie-apq8064", .data = &cfg_2_1_0 },
{ .compatible = "qcom,pcie-apq8084", .data = &cfg_1_0_0 },
{ .compatible = "qcom,pcie-ipq4019", .data = &cfg_2_4_0 },
+ { .compatible = "qcom,pcie-ipq5018", .data = &cfg_2_9_0 },
{ .compatible = "qcom,pcie-ipq6018", .data = &cfg_2_9_0 },
{ .compatible = "qcom,pcie-ipq8064", .data = &cfg_2_1_0 },
{ .compatible = "qcom,pcie-ipq8064-v2", .data = &cfg_2_1_0 },
--
2.17.1