linux-kernel - [PATCH V2 5/8] soc: imx: add icc paths for i.MX8MP hsio/hdmi blk ctrl

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Message-Id: <20220616073953.2204978-6-peng.fan@oss.nxp.com>
Date:   Thu, 16 Jun 2022 15:39:50 +0800
From:   "Peng Fan (OSS)" <peng.fan@....nxp.com>
To:     robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        shawnguo@...nel.org, s.hauer@...gutronix.de
Cc:     festevam@...il.com, linux-imx@....com,
        laurent.pinchart@...asonboard.com, paul.elder@...asonboard.com,
        marex@...x.de, aford173@...il.com, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Peng Fan <peng.fan@....com>
Subject: [PATCH V2 5/8] soc: imx: add icc paths for i.MX8MP hsio/hdmi blk ctrl

From: Peng Fan <peng.fan@....com>

Add interconnect paths for i.MX8MP hsio/hdmi blk ctrl

Signed-off-by: Peng Fan <peng.fan@....com>
---
 drivers/soc/imx/imx8mp-blk-ctrl.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/drivers/soc/imx/imx8mp-blk-ctrl.c b/drivers/soc/imx/imx8mp-blk-ctrl.c
index 4ca2ede6871b..58ff8ec70cfb 100644
--- a/drivers/soc/imx/imx8mp-blk-ctrl.c
+++ b/drivers/soc/imx/imx8mp-blk-ctrl.c
@@ -6,6 +6,7 @@
 
 #include <linux/clk.h>
 #include <linux/device.h>
+#include <linux/interconnect.h>
 #include <linux/module.h>
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
@@ -36,15 +37,19 @@ struct imx8mp_blk_ctrl_domain_data {
 	const char *name;
 	const char * const *clk_names;
 	int num_clks;
+	const char * const *path_names;
+	int num_paths;
 	const char *gpc_name;
 };
 
 #define DOMAIN_MAX_CLKS 2
+#define DOMAIN_MAX_PATHS 3
 
 struct imx8mp_blk_ctrl_domain {
 	struct generic_pm_domain genpd;
 	const struct imx8mp_blk_ctrl_domain_data *data;
 	struct clk_bulk_data clks[DOMAIN_MAX_CLKS];
+	struct icc_bulk_data paths[DOMAIN_MAX_PATHS];
 	struct device *power_dev;
 	struct imx8mp_blk_ctrl *bc;
 	int id;
@@ -144,6 +149,8 @@ static const struct imx8mp_blk_ctrl_domain_data imx8mp_hsio_domain_data[] = {
 		.clk_names = (const char *[]){ "usb" },
 		.num_clks = 1,
 		.gpc_name = "usb",
+		.path_names = (const char *[]){"usb1", "usb2"},
+		.num_paths = 2,
 	},
 	[IMX8MP_HSIOBLK_PD_USB_PHY1] = {
 		.name = "hsioblk-usb-phy1",
@@ -158,6 +165,8 @@ static const struct imx8mp_blk_ctrl_domain_data imx8mp_hsio_domain_data[] = {
 		.clk_names = (const char *[]){ "pcie" },
 		.num_clks = 1,
 		.gpc_name = "pcie",
+		.path_names = (const char *[]){"noc-pcie", "pcie"},
+		.num_paths = 2,
 	},
 	[IMX8MP_HSIOBLK_PD_PCIE_PHY] = {
 		.name = "hsioblk-pcie-phy",
@@ -322,6 +331,8 @@ static const struct imx8mp_blk_ctrl_domain_data imx8mp_hdmi_domain_data[] = {
 		.clk_names = (const char *[]){ "axi", "apb" },
 		.num_clks = 2,
 		.gpc_name = "lcdif",
+		.path_names = (const char *[]){"lcdif-hdmi"},
+		.num_paths = 1,
 	},
 	[IMX8MP_HDMIBLK_PD_PAI] = {
 		.name = "hdmiblk-pai",
@@ -395,6 +406,10 @@ static int imx8mp_blk_ctrl_power_on(struct generic_pm_domain *genpd)
 		goto clk_disable;
 	}
 
+	ret = icc_bulk_set_bw(data->num_paths, domain->paths);
+	if (ret)
+		dev_err(bc->dev, "failed to set icc bw\n");
+
 	clk_bulk_disable_unprepare(data->num_clks, domain->clks);
 
 	return 0;
@@ -514,6 +529,20 @@ static int imx8mp_blk_ctrl_probe(struct platform_device *pdev)
 		for (j = 0; j < data->num_clks; j++)
 			domain->clks[j].id = data->clk_names[j];
 
+		for (j = 0; j < data->num_paths; j++) {
+			domain->paths[j].name = data->path_names[j];
+			/* Fake value for now, just let ICC could configure NoC mode/priority */
+			domain->paths[j].avg_bw = 1;
+			domain->paths[j].peak_bw = 1;
+		}
+
+		ret = devm_of_icc_bulk_get(dev, data->num_paths, domain->paths);
+		if (ret) {
+			dev_err_probe(dev, ret, "failed to get noc entries\n");
+			goto cleanup_pds;
+		}
+
+
 		ret = devm_clk_bulk_get(dev, data->num_clks, domain->clks);
 		if (ret) {
 			dev_err_probe(dev, ret, "failed to get clock\n");
-- 
2.25.1