[PATCH AUTOSEL 6.6 074/294] pinctrl-tegra: Restore SFSEL bit when freeing pins

[PATCH AUTOSEL 6.6 074/294] pinctrl-tegra: Restore SFSEL bit when freeing pins

[Sasha Levin]

From: Prathamesh Shete <pshete@nvidia.com>

[ Upstream commit c12bfa0fee65940b10ff5187349f76c6f6b1df9c ]

Each pin can be configured as a Special Function IO (SFIO) or GPIO,
where the SFIO enables the pin to operate in alternative modes such as
I2C, SPI, etc.

The current implementation sets all the pins back to SFIO mode
even if they were initially in GPIO mode. This can cause glitches
on the pins when pinctrl_gpio_free() is called.

Avoid these undesired glitches by storing the pin's SFIO/GPIO
state on GPIO request and restoring it on GPIO free.

Signed-off-by: Prathamesh Shete <pshete@nvidia.com>
Link: https://lore.kernel.org/20250305104939.15168-2-pshete@nvidia.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pinctrl/tegra/pinctrl-tegra.c | 59 +++++++++++++++++++++++----
 drivers/pinctrl/tegra/pinctrl-tegra.h |  6 +++
 2 files changed, 57 insertions(+), 8 deletions(-)

diff --git a/drivers/pinctrl/tegra/pinctrl-tegra.c b/drivers/pinctrl/tegra/pinctrl-tegra.c
index 7c12a3470642c..1350ab56fbc03 100644
--- a/drivers/pinctrl/tegra/pinctrl-tegra.c
+++ b/drivers/pinctrl/tegra/pinctrl-tegra.c
@@ -280,8 +280,8 @@ static int tegra_pinctrl_set_mux(struct pinctrl_dev *pctldev,
 	return 0;
 }
 
-static const struct tegra_pingroup *tegra_pinctrl_get_group(struct pinctrl_dev *pctldev,
-					unsigned int offset)
+static int tegra_pinctrl_get_group_index(struct pinctrl_dev *pctldev,
+					 unsigned int offset)
 {
 	struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
 	unsigned int group, num_pins, j;
@@ -294,12 +294,35 @@ static const struct tegra_pingroup *tegra_pinctrl_get_group(struct pinctrl_dev *
 			continue;
 		for (j = 0; j < num_pins; j++) {
 			if (offset == pins[j])
-				return &pmx->soc->groups[group];
+				return group;
 		}
 	}
 
-	dev_err(pctldev->dev, "Pingroup not found for pin %u\n", offset);
-	return NULL;
+	return -EINVAL;
+}
+
+static const struct tegra_pingroup *tegra_pinctrl_get_group(struct pinctrl_dev *pctldev,
+							    unsigned int offset,
+							    int group_index)
+{
+	struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
+
+	if (group_index < 0 || group_index > pmx->soc->ngroups)
+		return NULL;
+
+	return &pmx->soc->groups[group_index];
+}
+
+static struct tegra_pingroup_config *tegra_pinctrl_get_group_config(struct pinctrl_dev *pctldev,
+								    unsigned int offset,
+								    int group_index)
+{
+	struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
+
+	if (group_index < 0)
+		return NULL;
+
+	return &pmx->pingroup_configs[group_index];
 }
 
 static int tegra_pinctrl_gpio_request_enable(struct pinctrl_dev *pctldev,
@@ -308,12 +331,15 @@ static int tegra_pinctrl_gpio_request_enable(struct pinctrl_dev *pctldev,
 {
 	struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
 	const struct tegra_pingroup *group;
+	struct tegra_pingroup_config *config;
+	int group_index;
 	u32 value;
 
 	if (!pmx->soc->sfsel_in_mux)
 		return 0;
 
-	group = tegra_pinctrl_get_group(pctldev, offset);
+	group_index = tegra_pinctrl_get_group_index(pctldev, offset);
+	group = tegra_pinctrl_get_group(pctldev, offset, group_index);
 
 	if (!group)
 		return -EINVAL;
@@ -321,7 +347,11 @@ static int tegra_pinctrl_gpio_request_enable(struct pinctrl_dev *pctldev,
 	if (group->mux_reg < 0 || group->sfsel_bit < 0)
 		return -EINVAL;
 
+	config = tegra_pinctrl_get_group_config(pctldev, offset, group_index);
+	if (!config)
+		return -EINVAL;
 	value = pmx_readl(pmx, group->mux_bank, group->mux_reg);
+	config->is_sfsel = (value & BIT(group->sfsel_bit)) != 0;
 	value &= ~BIT(group->sfsel_bit);
 	pmx_writel(pmx, value, group->mux_bank, group->mux_reg);
 
@@ -334,12 +364,15 @@ static void tegra_pinctrl_gpio_disable_free(struct pinctrl_dev *pctldev,
 {
 	struct tegra_pmx *pmx = pinctrl_dev_get_drvdata(pctldev);
 	const struct tegra_pingroup *group;
+	struct tegra_pingroup_config *config;
+	int group_index;
 	u32 value;
 
 	if (!pmx->soc->sfsel_in_mux)
 		return;
 
-	group = tegra_pinctrl_get_group(pctldev, offset);
+	group_index = tegra_pinctrl_get_group_index(pctldev, offset);
+	group = tegra_pinctrl_get_group(pctldev, offset, group_index);
 
 	if (!group)
 		return;
@@ -347,8 +380,12 @@ static void tegra_pinctrl_gpio_disable_free(struct pinctrl_dev *pctldev,
 	if (group->mux_reg < 0 || group->sfsel_bit < 0)
 		return;
 
+	config = tegra_pinctrl_get_group_config(pctldev, offset, group_index);
+	if (!config)
+		return;
 	value = pmx_readl(pmx, group->mux_bank, group->mux_reg);
-	value |= BIT(group->sfsel_bit);
+	if (config->is_sfsel)
+		value |= BIT(group->sfsel_bit);
 	pmx_writel(pmx, value, group->mux_bank, group->mux_reg);
 }
 
@@ -785,6 +822,12 @@ int tegra_pinctrl_probe(struct platform_device *pdev,
 	pmx->dev = &pdev->dev;
 	pmx->soc = soc_data;
 
+	pmx->pingroup_configs = devm_kcalloc(&pdev->dev,
+					     pmx->soc->ngroups, sizeof(*pmx->pingroup_configs),
+					     GFP_KERNEL);
+	if (!pmx->pingroup_configs)
+		return -ENOMEM;
+
 	/*
 	 * Each mux group will appear in 4 functions' list of groups.
 	 * This over-allocates slightly, since not all groups are mux groups.
diff --git a/drivers/pinctrl/tegra/pinctrl-tegra.h b/drivers/pinctrl/tegra/pinctrl-tegra.h
index b3289bdf727d8..b97136685f7a8 100644
--- a/drivers/pinctrl/tegra/pinctrl-tegra.h
+++ b/drivers/pinctrl/tegra/pinctrl-tegra.h
@@ -8,6 +8,10 @@
 #ifndef __PINMUX_TEGRA_H__
 #define __PINMUX_TEGRA_H__
 
+struct tegra_pingroup_config {
+	bool is_sfsel;
+};
+
 struct tegra_pmx {
 	struct device *dev;
 	struct pinctrl_dev *pctl;
@@ -21,6 +25,8 @@ struct tegra_pmx {
 	int nbanks;
 	void __iomem **regs;
 	u32 *backup_regs;
+	/* Array of size soc->ngroups */
+	struct tegra_pingroup_config *pingroup_configs;
 };
 
 enum tegra_pinconf_param {
-- 
2.39.5

[PATCH AUTOSEL 6.6 100/294] cpufreq: tegra186: Share policy per cluster

[Sasha Levin]

From: Aaron Kling <luceoscutum@gmail.com>

[ Upstream commit be4ae8c19492cd6d5de61ccb34ffb3f5ede5eec8 ]

This functionally brings tegra186 in line with tegra210 and tegra194,
sharing a cpufreq policy between all cores in a cluster.

Reviewed-by: Sumit Gupta <sumitg@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Aaron Kling <webgeek1234@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/cpufreq/tegra186-cpufreq.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/cpufreq/tegra186-cpufreq.c b/drivers/cpufreq/tegra186-cpufreq.c
index 7b8fcfa55038b..4e5b6f9a56d1b 100644
--- a/drivers/cpufreq/tegra186-cpufreq.c
+++ b/drivers/cpufreq/tegra186-cpufreq.c
@@ -73,11 +73,18 @@ static int tegra186_cpufreq_init(struct cpufreq_policy *policy)
 {
 	struct tegra186_cpufreq_data *data = cpufreq_get_driver_data();
 	unsigned int cluster = data->cpus[policy->cpu].bpmp_cluster_id;
+	u32 cpu;
 
 	policy->freq_table = data->clusters[cluster].table;
 	policy->cpuinfo.transition_latency = 300 * 1000;
 	policy->driver_data = NULL;
 
+	/* set same policy for all cpus in a cluster */
+	for (cpu = 0; cpu < ARRAY_SIZE(tegra186_cpus); cpu++) {
+		if (data->cpus[cpu].bpmp_cluster_id == cluster)
+			cpumask_set_cpu(cpu, policy->cpus);
+	}
+
 	return 0;
 }
 
-- 
2.39.5

[PATCH AUTOSEL 6.6 104/294] arm64: tegra: p2597: Fix gpio for vdd-1v8-dis regulator

[Sasha Levin]

From: Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt>

[ Upstream commit f34621f31e3be81456c903287f7e4c0609829e29 ]

According to the board schematics the enable pin of this regulator is
connected to gpio line #9 of the first instance of the TCA9539
GPIO expander, so adjust it.

Signed-off-by: Diogo Ivo <diogo.ivo@tecnico.ulisboa.pt>
Link: https://lore.kernel.org/r/20250224-diogo-gpio_exp-v1-1-80fb84ac48c6@tecnico.ulisboa.pt
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi
index b4a1108c2dd74..0639f5ce1bd9e 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210-p2597.dtsi
@@ -1635,7 +1635,7 @@ vdd_1v8_dis: regulator-vdd-1v8-dis {
 		regulator-min-microvolt = <1800000>;
 		regulator-max-microvolt = <1800000>;
 		regulator-always-on;
-		gpio = <&exp1 14 GPIO_ACTIVE_HIGH>;
+		gpio = <&exp1 9 GPIO_ACTIVE_HIGH>;
 		enable-active-high;
 		vin-supply = <&vdd_1v8>;
 	};
-- 
2.39.5

[PATCH AUTOSEL 6.6 105/294] arm64: tegra: Resize aperture for the IGX PCIe C5 slot

[Sasha Levin]

From: Jon Hunter <jonathanh@nvidia.com>

[ Upstream commit 6d4bfe6d86af1ef52bdb4592c9afb2037f24f2c4 ]

Some discrete graphics cards such as the NVIDIA RTX A6000 support
resizable BARs. When connecting an A6000 card to the NVIDIA IGX Orin
platform, resizing the BAR1 aperture to 8GB fails because the current
device-tree configuration for the PCIe C5 slot cannot support this.
Fix this by updating the device-tree 'reg' and 'ranges' properties for
the PCIe C5 slot to support this.

Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Link: https://lore.kernel.org/r/20250116151903.476047-1-jonathanh@nvidia.com
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../boot/dts/nvidia/tegra234-p3740-0002+p3701-0008.dts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra234-p3740-0002+p3701-0008.dts b/arch/arm64/boot/dts/nvidia/tegra234-p3740-0002+p3701-0008.dts
index bac611d735c58..2fa48972b2a91 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234-p3740-0002+p3701-0008.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra234-p3740-0002+p3701-0008.dts
@@ -102,6 +102,16 @@ pcie@14160000 {
 		};
 
 		pcie@141a0000 {
+			reg = <0x00 0x141a0000 0x0 0x00020000   /* appl registers (128K)      */
+			       0x00 0x3a000000 0x0 0x00040000   /* configuration space (256K) */
+			       0x00 0x3a040000 0x0 0x00040000   /* iATU_DMA reg space (256K)  */
+			       0x00 0x3a080000 0x0 0x00040000   /* DBI reg space (256K)       */
+			       0x2e 0x20000000 0x0 0x10000000>; /* ECAM (256MB)               */
+
+			ranges = <0x81000000 0x00 0x3a100000 0x00 0x3a100000 0x0 0x00100000      /* downstream I/O (1MB) */
+				  0x82000000 0x00 0x40000000 0x2e 0x30000000 0x0 0x08000000      /* non-prefetchable memory (128MB) */
+				  0xc3000000 0x28 0x00000000 0x28 0x00000000 0x6 0x20000000>;    /* prefetchable memory (25088MB) */
+
 			status = "okay";
 			vddio-pex-ctl-supply = <&vdd_1v8_ls>;
 			phys = <&p2u_nvhs_0>, <&p2u_nvhs_1>, <&p2u_nvhs_2>,
-- 
2.39.5

[PATCH AUTOSEL 6.6 111/294] ARM: tegra: Switch DSI-B clock parent to PLLD on Tegra114

[Sasha Levin]

From: Svyatoslav Ryhel <clamor95@gmail.com>

[ Upstream commit 2b3db788f2f614b875b257cdb079adadedc060f3 ]

PLLD is usually used as parent clock for internal video devices, like
DSI for example, while PLLD2 is used as parent for HDMI.

Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Link: https://lore.kernel.org/r/20250226105615.61087-3-clamor95@gmail.com
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/nvidia/tegra114.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/nvidia/tegra114.dtsi b/arch/arm/boot/dts/nvidia/tegra114.dtsi
index 86f14e2fd29f3..6c057b5069514 100644
--- a/arch/arm/boot/dts/nvidia/tegra114.dtsi
+++ b/arch/arm/boot/dts/nvidia/tegra114.dtsi
@@ -139,7 +139,7 @@ dsib: dsi@54400000 {
 			reg = <0x54400000 0x00040000>;
 			clocks = <&tegra_car TEGRA114_CLK_DSIB>,
 				 <&tegra_car TEGRA114_CLK_DSIBLP>,
-				 <&tegra_car TEGRA114_CLK_PLL_D2_OUT0>;
+				 <&tegra_car TEGRA114_CLK_PLL_D_OUT0>;
 			clock-names = "dsi", "lp", "parent";
 			resets = <&tegra_car 82>;
 			reset-names = "dsi";
-- 
2.39.5