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Message-Id: <20220406082330.2681591-6-peng.fan@oss.nxp.com>
Date: Wed, 6 Apr 2022 16:23:30 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: djakov@...nel.org, robh+dt@...nel.org,
krzysztof.kozlowski+dt@...aro.org, shawnguo@...nel.org,
s.hauer@...gutronix.de, kernel@...gutronix.de
Cc: festevam@...il.com, linux-imx@....com,
laurent.pinchart@...asonboard.com, l.stach@...gutronix.de,
linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Peng Fan <peng.fan@....com>
Subject: [PATCH 5/5] soc: imx: imx8mp-blk-ctrl: introduce HSIO blk ctrl noc settings
From: Peng Fan <peng.fan@....com>
The out of reset value of HSIO NoC is not a valid value, we need
set it to a correct value. We only need to set it after power on.
Signed-off-by: Peng Fan <peng.fan@....com>
---
drivers/soc/imx/imx8mp-blk-ctrl.c | 74 +++++++++++++++++++++++++++++++
1 file changed, 74 insertions(+)
diff --git a/drivers/soc/imx/imx8mp-blk-ctrl.c b/drivers/soc/imx/imx8mp-blk-ctrl.c
index e832c007b063..929fd9b770ae 100644
--- a/drivers/soc/imx/imx8mp-blk-ctrl.c
+++ b/drivers/soc/imx/imx8mp-blk-ctrl.c
@@ -12,6 +12,7 @@
#include <linux/pm_domain.h>
#include <linux/pm_runtime.h>
#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
#include <dt-bindings/power/imx8mp-power.h>
@@ -26,14 +27,24 @@ struct imx8mp_hsio_blk_ctrl {
struct notifier_block power_nb;
struct device *bus_power_dev;
struct regmap *regmap;
+ struct regmap *noc_regmap;
struct imx8mp_hsio_blk_ctrl_domain *domains;
struct genpd_onecell_data onecell_data;
};
+struct imx8mp_hsio_blk_ctrl_noc_data {
+ u32 off;
+ u32 priority;
+ u32 mode;
+ u32 extctrl;
+};
+
+#define DOMAIN_MAX_NOC 2
struct imx8mp_hsio_blk_ctrl_domain_data {
const char *name;
const char *clk_name;
const char *gpc_name;
+ const struct imx8mp_hsio_blk_ctrl_noc_data *noc_data[DOMAIN_MAX_NOC];
};
struct imx8mp_hsio_blk_ctrl_domain {
@@ -41,6 +52,7 @@ struct imx8mp_hsio_blk_ctrl_domain {
struct clk *clk;
struct device *power_dev;
struct imx8mp_hsio_blk_ctrl *bc;
+ const struct imx8mp_hsio_blk_ctrl_domain_data *data;
int id;
};
@@ -50,6 +62,27 @@ to_imx8mp_hsio_blk_ctrl_domain(struct generic_pm_domain *genpd)
return container_of(genpd, struct imx8mp_hsio_blk_ctrl_domain, genpd);
}
+static int imx8mp_hsio_noc_set(struct imx8mp_hsio_blk_ctrl_domain *domain)
+{
+ const struct imx8mp_hsio_blk_ctrl_domain_data *data = domain->data;
+ struct imx8mp_hsio_blk_ctrl *bc = domain->bc;
+ struct regmap *regmap = bc->noc_regmap;
+ int i;
+
+ if (!data || !regmap)
+ return 0;
+
+ for (i = 0; i < DOMAIN_MAX_NOC; i++) {
+ if (!data->noc_data[i])
+ continue;
+ regmap_write(regmap, data->noc_data[i]->off + 0x8, data->noc_data[i]->priority);
+ regmap_write(regmap, data->noc_data[i]->off + 0xc, data->noc_data[i]->mode);
+ regmap_write(regmap, data->noc_data[i]->off + 0x18, data->noc_data[i]->extctrl);
+ }
+
+ return 0;
+}
+
static int imx8mp_hsio_blk_ctrl_power_on(struct generic_pm_domain *genpd)
{
struct imx8mp_hsio_blk_ctrl_domain *domain =
@@ -89,6 +122,8 @@ static int imx8mp_hsio_blk_ctrl_power_on(struct generic_pm_domain *genpd)
goto clk_disable;
}
+ imx8mp_hsio_noc_set(domain);
+
return 0;
clk_disable:
@@ -143,11 +178,39 @@ imx8m_blk_ctrl_xlate(struct of_phandle_args *args, void *data)
static struct lock_class_key blk_ctrl_genpd_lock_class;
+#define IMX8MP_HSIOBLK_NOC_PCIE 0
+#define IMX8MP_HSIOBLK_USB1 1
+#define IMX8MP_HSIOBLK_USB2 2
+#define IMX8MP_HSIOBLK_PCIE 3
+
+static const struct imx8mp_hsio_blk_ctrl_noc_data imx8mp_hsio_noc_data[] = {
+ [IMX8MP_HSIOBLK_NOC_PCIE] = {
+ .off = 0x780,
+ .priority = 0x80000303,
+ },
+ [IMX8MP_HSIOBLK_USB1] = {
+ .off = 0x800,
+ .priority = 0x80000303,
+ },
+ [IMX8MP_HSIOBLK_USB2] = {
+ .off = 0x880,
+ .priority = 0x80000303,
+ },
+ [IMX8MP_HSIOBLK_PCIE] = {
+ .off = 0x900,
+ .priority = 0x80000303,
+ },
+};
+
static const struct imx8mp_hsio_blk_ctrl_domain_data imx8mp_hsio_domain_data[] = {
[IMX8MP_HSIOBLK_PD_USB] = {
.name = "hsioblk-usb",
.clk_name = "usb",
.gpc_name = "usb",
+ .noc_data = {
+ &imx8mp_hsio_noc_data[IMX8MP_HSIOBLK_USB1],
+ &imx8mp_hsio_noc_data[IMX8MP_HSIOBLK_USB2]
+ },
},
[IMX8MP_HSIOBLK_PD_USB_PHY1] = {
.name = "hsioblk-usb-phy1",
@@ -161,6 +224,10 @@ static const struct imx8mp_hsio_blk_ctrl_domain_data imx8mp_hsio_domain_data[] =
.name = "hsioblk-pcie",
.clk_name = "pcie",
.gpc_name = "pcie",
+ .noc_data = {
+ &imx8mp_hsio_noc_data[IMX8MP_HSIOBLK_NOC_PCIE],
+ &imx8mp_hsio_noc_data[IMX8MP_HSIOBLK_PCIE]
+ },
},
[IMX8MP_HSIOBLK_PD_PCIE_PHY] = {
.name = "hsioblk-pcie-phy",
@@ -215,6 +282,7 @@ static int imx8mp_hsio_blk_ctrl_probe(struct platform_device *pdev)
int num_domains = ARRAY_SIZE(imx8mp_hsio_domain_data);
struct device *dev = &pdev->dev;
struct imx8mp_hsio_blk_ctrl *bc;
+ struct regmap *regmap;
void __iomem *base;
int i, ret;
@@ -259,11 +327,17 @@ static int imx8mp_hsio_blk_ctrl_probe(struct platform_device *pdev)
return dev_err_probe(dev, PTR_ERR(bc->bus_power_dev),
"failed to attach bus power domain\n");
+ regmap = syscon_regmap_lookup_by_compatible("fsl,imx8m-noc");
+ if (!IS_ERR(regmap))
+ bc->noc_regmap = regmap;
+
for (i = 0; i < num_domains; i++) {
const struct imx8mp_hsio_blk_ctrl_domain_data *data =
&imx8mp_hsio_domain_data[i];
struct imx8mp_hsio_blk_ctrl_domain *domain = &bc->domains[i];
+ domain->data = data;
+
if (data->clk_name) {
domain->clk = devm_clk_get(dev, data->clk_name);
if (IS_ERR(domain->clk)) {
--
2.25.1
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