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* [PATCH v2 1/3] clk: i.MX8MQ: Add missing IMX8MQ_CLK_TMU_ROOT clock
@ 2018-09-21  6:05 Andrey Smirnov
  2018-09-21  6:05 ` [PATCH v2 2/3] aiodev: Port Linux driver for i.MX8MQ CPU thermal sensor Andrey Smirnov
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Andrey Smirnov @ 2018-09-21  6:05 UTC (permalink / raw)
  To: barebox; +Cc: Andrey Smirnov

Add missing IMX8MQ_CLK_TMU_ROOT clock needed for CPU thermal sensor.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---

Changes since [v1]:

    - None

[v1] http://lists.infradead.org/pipermail/barebox/2018-September/034788.html

 drivers/clk/imx/clk-imx8mq.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/imx/clk-imx8mq.c b/drivers/clk/imx/clk-imx8mq.c
index 782bbc256..0431f61f0 100644
--- a/drivers/clk/imx/clk-imx8mq.c
+++ b/drivers/clk/imx/clk-imx8mq.c
@@ -572,6 +572,7 @@ static void __init imx8mq_clocks_init(struct device_node *ccm_node)
 	clks[IMX8MQ_CLK_WDOG1_ROOT] = imx_clk_gate4("wdog1_root_clk", "wdog_div", base + 0x4530, 0);
 	clks[IMX8MQ_CLK_WDOG2_ROOT] = imx_clk_gate4("wdog2_root_clk", "wdog_div", base + 0x4540, 0);
 	clks[IMX8MQ_CLK_WDOG3_ROOT] = imx_clk_gate4("wdog3_root_clk", "wdog_div", base + 0x4550, 0);
+	clks[IMX8MQ_CLK_TMU_ROOT] = imx_clk_gate4("tmu_root_clk", "ipg_root", base + 0x4620, 0);
 
 	clks[IMX8MQ_GPT_3M_CLK] = imx_clk_fixed_factor("gpt_3m", "osc_25m", 1, 8);
 	clks[IMX8MQ_CLK_DRAM_ALT_ROOT] = imx_clk_fixed_factor("dram_alt_root", "dram_alt_div", 1, 4);
-- 
2.17.1


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^ permalink raw reply	[flat|nested] 4+ messages in thread

* [PATCH v2 2/3] aiodev: Port Linux driver for i.MX8MQ CPU thermal sensor
  2018-09-21  6:05 [PATCH v2 1/3] clk: i.MX8MQ: Add missing IMX8MQ_CLK_TMU_ROOT clock Andrey Smirnov
@ 2018-09-21  6:05 ` Andrey Smirnov
  2018-09-21  6:05 ` [PATCH v2 3/3] ARM: i.MX8MQ: Add node for " Andrey Smirnov
  2018-09-24  7:05 ` [PATCH v2 1/3] clk: i.MX8MQ: Add missing IMX8MQ_CLK_TMU_ROOT clock Sascha Hauer
  2 siblings, 0 replies; 4+ messages in thread
From: Andrey Smirnov @ 2018-09-21  6:05 UTC (permalink / raw)
  To: barebox; +Cc: Andrey Smirnov

This patch is a minimal port of the corresponding driver that can be
found in Linux kernel (drivers/thermal/qoriq_thermal.c).

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---

Changes since [v1]:

    - None

[v1] http://lists.infradead.org/pipermail/barebox/2018-September/034789.html

 drivers/aiodev/Kconfig         |   7 +
 drivers/aiodev/Makefile        |   1 +
 drivers/aiodev/qoriq_thermal.c | 264 +++++++++++++++++++++++++++++++++
 3 files changed, 272 insertions(+)
 create mode 100644 drivers/aiodev/qoriq_thermal.c

diff --git a/drivers/aiodev/Kconfig b/drivers/aiodev/Kconfig
index 3eabd3b3f..7f1d0fd4a 100644
--- a/drivers/aiodev/Kconfig
+++ b/drivers/aiodev/Kconfig
@@ -16,6 +16,13 @@ config IMX_THERMAL
          Support for Temperature Monitor (TEMPMON) found on Freescale
          i.MX SoCs.
 
+config QORIQ_THERMAL
+	tristate "QorIQ Thermal Monitoring Unit"
+	depends on ARCH_IMX8MQ
+	help
+	  Support for Thermal Monitoring Unit (TMU) found on QorIQ and
+	  i.MX8MQ platforms.
+
 config LM75
 	tristate "LM75 driver"
 	depends on I2C
diff --git a/drivers/aiodev/Makefile b/drivers/aiodev/Makefile
index 1dcf6cdc4..d5318deeb 100644
--- a/drivers/aiodev/Makefile
+++ b/drivers/aiodev/Makefile
@@ -3,3 +3,4 @@ obj-$(CONFIG_AIODEV) += core.o
 obj-$(CONFIG_IMX_THERMAL) += imx_thermal.o
 obj-$(CONFIG_LM75) += lm75.o
 obj-$(CONFIG_MC13XXX_ADC) += mc13xxx_adc.o
+obj-$(CONFIG_QORIQ_THERMAL) += qoriq_thermal.o
diff --git a/drivers/aiodev/qoriq_thermal.c b/drivers/aiodev/qoriq_thermal.c
new file mode 100644
index 000000000..d29da02a6
--- /dev/null
+++ b/drivers/aiodev/qoriq_thermal.c
@@ -0,0 +1,264 @@
+/*
+ * Copyright 2016 Freescale Semiconductor, Inc.
+ * Copyright 2017 NXP.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ */
+
+#include <common.h>
+#include <init.h>
+#include <malloc.h>
+#include <clock.h>
+#include <driver.h>
+#include <xfuncs.h>
+#include <errno.h>
+#include <io.h>
+#include <aiodev.h>
+#include <of_address.h>
+#include <linux/clk.h>
+
+#define SITES_MAX	16
+
+#define TMU_TEMP_PASSIVE_COOL_DELTA	10000
+
+/*
+ * QorIQ TMU Registers
+ */
+struct qoriq_tmu_site_regs {
+	u32 tritsr;		/* Immediate Temperature Site Register */
+	u32 tratsr;		/* Average Temperature Site Register */
+	u8 res0[0x8];
+};
+
+struct qoriq_tmu_regs {
+	u32 tmr;		/* Mode Register */
+#define TMR_DISABLE	0x0
+#define TMR_ME		0x80000000
+#define TMR_ALPF	0x0c000000
+	u32 tsr;		/* Status Register */
+	u32 tmtmir;		/* Temperature measurement interval Register */
+#define TMTMIR_DEFAULT	0x0000000f
+	u8 res0[0x14];
+	u32 tier;		/* Interrupt Enable Register */
+#define TIER_DISABLE	0x0
+	u32 tidr;		/* Interrupt Detect Register */
+	u32 tiscr;		/* Interrupt Site Capture Register */
+	u32 ticscr;		/* Interrupt Critical Site Capture Register */
+	u8 res1[0x10];
+	u32 tmhtcrh;		/* High Temperature Capture Register */
+	u32 tmhtcrl;		/* Low Temperature Capture Register */
+	u8 res2[0x8];
+	u32 tmhtitr;		/* High Temperature Immediate Threshold */
+	u32 tmhtatr;		/* High Temperature Average Threshold */
+	u32 tmhtactr;	/* High Temperature Average Crit Threshold */
+	u8 res3[0x24];
+	u32 ttcfgr;		/* Temperature Configuration Register */
+	u32 tscfgr;		/* Sensor Configuration Register */
+	u8 res4[0x78];
+	struct qoriq_tmu_site_regs site[SITES_MAX];
+	u8 res5[0x9f8];
+	u32 ipbrr0;		/* IP Block Revision Register 0 */
+	u32 ipbrr1;		/* IP Block Revision Register 1 */
+	u8 res6[0x310];
+	u32 ttr0cr;		/* Temperature Range 0 Control Register */
+	u32 ttr1cr;		/* Temperature Range 1 Control Register */
+	u32 ttr2cr;		/* Temperature Range 2 Control Register */
+	u32 ttr3cr;		/* Temperature Range 3 Control Register */
+};
+
+/*
+ * Thermal zone data
+ */
+struct qoriq_tmu_data {
+	struct device_d *dev;
+	struct clk *clk;
+	struct qoriq_tmu_regs __iomem *regs;
+	int sensor_id;
+	bool little_endian;
+	int temp_passive;
+	int temp_critical;
+
+	struct aiodevice aiodev;
+	struct aiochannel aiochan;
+};
+
+static inline struct qoriq_tmu_data *to_qoriq_tmu_data(struct aiochannel *chan)
+{
+	return container_of(chan, struct qoriq_tmu_data, aiochan);
+}
+
+static void tmu_write(struct qoriq_tmu_data *p, u32 val, void __iomem *addr)
+{
+	if (p->little_endian)
+		iowrite32(val, addr);
+	else
+		iowrite32be(val, addr);
+}
+
+static u32 tmu_read(struct qoriq_tmu_data *p, void __iomem *addr)
+{
+	if (p->little_endian)
+		return ioread32(addr);
+	else
+		return ioread32be(addr);
+}
+
+static int tmu_get_temp(struct aiochannel *chan, int *temp)
+{
+	u32 val;
+	struct qoriq_tmu_data *data = to_qoriq_tmu_data(chan);
+
+	val = tmu_read(data, &data->regs->site[data->sensor_id].tritsr);
+
+	*temp = (val & 0xff) * 1000;
+
+	return 0;
+}
+
+static int qoriq_tmu_get_sensor_id(void)
+{
+	int ret, id;
+	struct of_phandle_args sensor_specs;
+	struct device_node *np, *sensor_np;
+
+	np = of_find_node_by_name(NULL, "thermal-zones");
+	if (!np)
+		return -ENODEV;
+
+	sensor_np = of_get_next_child(np, NULL);
+	ret = of_parse_phandle_with_args(sensor_np, "thermal-sensors",
+					 "#thermal-sensor-cells",
+					 0, &sensor_specs);
+	if (ret)
+		return ret;
+
+	if (sensor_specs.args_count >= 1) {
+		id = sensor_specs.args[0];
+		WARN(sensor_specs.args_count > 1,
+				"%s: too many cells in sensor specifier %d\n",
+				sensor_specs.np->name, sensor_specs.args_count);
+	} else {
+		id = 0;
+	}
+
+	return id;
+}
+
+static int qoriq_tmu_calibration(struct qoriq_tmu_data *data)
+{
+	int i, val, len;
+	u32 range[4];
+	const u32 *calibration;
+	struct device_node *np = data->dev->device_node;
+
+	if (of_property_read_u32_array(np, "fsl,tmu-range", range, 4)) {
+		dev_err(data->dev, "missing calibration range.\n");
+		return -ENODEV;
+	}
+
+	/* Init temperature range registers */
+	tmu_write(data, range[0], &data->regs->ttr0cr);
+	tmu_write(data, range[1], &data->regs->ttr1cr);
+	tmu_write(data, range[2], &data->regs->ttr2cr);
+	tmu_write(data, range[3], &data->regs->ttr3cr);
+
+	calibration = of_get_property(np, "fsl,tmu-calibration", &len);
+	if (calibration == NULL || len % 8) {
+		dev_err(data->dev, "invalid calibration data.\n");
+		return -ENODEV;
+	}
+
+	for (i = 0; i < len; i += 8, calibration += 2) {
+		val = of_read_number(calibration, 1);
+		tmu_write(data, val, &data->regs->ttcfgr);
+		val = of_read_number(calibration + 1, 1);
+		tmu_write(data, val, &data->regs->tscfgr);
+	}
+
+	return 0;
+}
+
+static void qoriq_tmu_init_device(struct qoriq_tmu_data *data)
+{
+	/* Disable interrupt, using polling instead */
+	tmu_write(data, TIER_DISABLE, &data->regs->tier);
+
+	/* Set update_interval */
+	tmu_write(data, TMTMIR_DEFAULT, &data->regs->tmtmir);
+
+	/* Disable monitoring */
+	tmu_write(data, TMR_DISABLE, &data->regs->tmr);
+}
+
+static int qoriq_tmu_probe(struct device_d *dev)
+{
+	struct device_node *np = dev->device_node;
+	struct qoriq_tmu_data *data;
+	u32 site;
+	int ret;
+
+	data = xzalloc(sizeof(*data));
+
+	data->dev = dev;
+	data->little_endian = of_property_read_bool(np, "little-endian");
+
+	data->sensor_id = qoriq_tmu_get_sensor_id();
+	if (data->sensor_id < 0) {
+		dev_err(dev, "Failed to get sensor id\n");
+		return -ENODEV;
+	}
+
+	data->regs = dev_request_mem_region(dev, 0);
+	if (IS_ERR(data->regs)) {
+		dev_err(dev, "Failed to get memory region\n");
+		return PTR_ERR(data->regs);
+	}
+
+	qoriq_tmu_init_device(data);	/* TMU initialization */
+
+	ret = qoriq_tmu_calibration(data);	/* TMU calibration */
+	if (ret < 0) {
+		dev_err(dev, "Failed to calibrate\n");
+		return ret;
+	}
+
+	data->aiodev.num_channels = 1;
+	data->aiodev.hwdev = dev;
+	data->aiodev.channels = xmalloc(data->aiodev.num_channels *
+					sizeof(data->aiodev.channels[0]));
+	data->aiodev.channels[0] = &data->aiochan;
+	data->aiochan.unit = "mC";
+	data->aiodev.read = tmu_get_temp;
+
+	ret = aiodevice_register(&data->aiodev);
+	if (ret < 0) {
+		dev_err(dev, "Failed to register aiodev\n");
+		return ret;
+	}
+
+	site = 0x1 << (15 - data->sensor_id);
+	tmu_write(data, site | TMR_ME | TMR_ALPF, &data->regs->tmr);
+
+	return 0;
+}
+
+static const struct of_device_id qoriq_tmu_match[] = {
+	{ .compatible = "fsl,qoriq-tmu", },
+	{ .compatible = "fsl,imx8mq-tmu",},
+	{},
+};
+
+static struct driver_d imx_thermal_driver = {
+	.name		= "qoriq_thermal",
+	.probe		= qoriq_tmu_probe,
+	.of_compatible	= DRV_OF_COMPAT(qoriq_tmu_match),
+};
+device_platform_driver(imx_thermal_driver);
-- 
2.17.1


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^ permalink raw reply	[flat|nested] 4+ messages in thread

* [PATCH v2 3/3] ARM: i.MX8MQ: Add node for CPU thermal sensor
  2018-09-21  6:05 [PATCH v2 1/3] clk: i.MX8MQ: Add missing IMX8MQ_CLK_TMU_ROOT clock Andrey Smirnov
  2018-09-21  6:05 ` [PATCH v2 2/3] aiodev: Port Linux driver for i.MX8MQ CPU thermal sensor Andrey Smirnov
@ 2018-09-21  6:05 ` Andrey Smirnov
  2018-09-24  7:05 ` [PATCH v2 1/3] clk: i.MX8MQ: Add missing IMX8MQ_CLK_TMU_ROOT clock Sascha Hauer
  2 siblings, 0 replies; 4+ messages in thread
From: Andrey Smirnov @ 2018-09-21  6:05 UTC (permalink / raw)
  To: barebox; +Cc: Andrey Smirnov

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
---

Changes since [v1]:

    - Added #cooling-cells property &A53_0 to avoid getting a warning from DTC

[v1] http://lists.infradead.org/pipermail/barebox/2018-September/034790.html

 arch/arm/dts/imx8mq.dtsi | 85 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 85 insertions(+)

diff --git a/arch/arm/dts/imx8mq.dtsi b/arch/arm/dts/imx8mq.dtsi
index 763005217..f89bee200 100644
--- a/arch/arm/dts/imx8mq.dtsi
+++ b/arch/arm/dts/imx8mq.dtsi
@@ -7,6 +7,7 @@
 #include <dt-bindings/clock/imx8mq-clock.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/thermal/thermal.h>
 #include "imx8mq-pinfunc.h"
 
 /* first 128 KiB of memory are owned by ATF */
@@ -96,6 +97,7 @@
 			reg = <0x0>;
 			enable-method = "psci";
 			next-level-cache = <&A53_L2>;
+			#cooling-cells = <2>;
 		};
 
 		A53_1: cpu@1 {
@@ -214,6 +216,89 @@
 				#interrupt-cells = <2>;
 			};
 
+			tmu: tmu@30260000 {
+				compatible = "fsl,imx8mq-tmu";
+				reg = <0x30260000 0x10000>;
+				interrupt = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
+				little-endian;
+				fsl,tmu-range = <0xb0000 0xa0026 0x80048 0x70061>;
+				fsl,tmu-calibration = <0x00000000 0x00000023
+						       0x00000001 0x00000029
+						       0x00000002 0x0000002f
+						       0x00000003 0x00000035
+						       0x00000004 0x0000003d
+						       0x00000005 0x00000043
+						       0x00000006 0x0000004b
+						       0x00000007 0x00000051
+						       0x00000008 0x00000057
+						       0x00000009 0x0000005f
+						       0x0000000a 0x00000067
+						       0x0000000b 0x0000006f
+
+						       0x00010000 0x0000001b
+						       0x00010001 0x00000023
+						       0x00010002 0x0000002b
+						       0x00010003 0x00000033
+						       0x00010004 0x0000003b
+						       0x00010005 0x00000043
+						       0x00010006 0x0000004b
+						       0x00010007 0x00000055
+						       0x00010008 0x0000005d
+						       0x00010009 0x00000067
+						       0x0001000a 0x00000070
+
+						       0x00020000 0x00000017
+						       0x00020001 0x00000023
+						       0x00020002 0x0000002d
+						       0x00020003 0x00000037
+						       0x00020004 0x00000041
+						       0x00020005 0x0000004b
+						       0x00020006 0x00000057
+						       0x00020007 0x00000063
+						       0x00020008 0x0000006f
+
+						       0x00030000 0x00000015
+						       0x00030001 0x00000021
+						       0x00030002 0x0000002d
+						       0x00030003 0x00000039
+						       0x00030004 0x00000045
+						       0x00030005 0x00000053
+						       0x00030006 0x0000005f
+						       0x00030007 0x00000071>;
+				#thermal-sensor-cells =  <0>;
+			};
+
+			thermal-zones {
+				/* cpu thermal */
+				cpu-thermal {
+					polling-delay-passive = <250>;
+					polling-delay = <2000>;
+					thermal-sensors = <&tmu>;
+
+					trips {
+						cpu_alert0: trip0 {
+							temperature = <85000>;
+							hysteresis = <2000>;
+							type = "passive";
+						};
+
+						cpu_crit0: trip1 {
+							temperature = <95000>;
+							hysteresis = <2000>;
+							type = "critical";
+						};
+					};
+
+					cooling-maps {
+						map0 {
+							trip = <&cpu_alert0>;
+							cooling-device =
+							<&A53_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+						};
+					};
+				};
+			};
+
 			iomuxc: iomuxc@30330000 {
 				compatible = "fsl,imx8mq-iomuxc";
 				reg = <0x30330000 0x10000>;
-- 
2.17.1


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^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [PATCH v2 1/3] clk: i.MX8MQ: Add missing IMX8MQ_CLK_TMU_ROOT clock
  2018-09-21  6:05 [PATCH v2 1/3] clk: i.MX8MQ: Add missing IMX8MQ_CLK_TMU_ROOT clock Andrey Smirnov
  2018-09-21  6:05 ` [PATCH v2 2/3] aiodev: Port Linux driver for i.MX8MQ CPU thermal sensor Andrey Smirnov
  2018-09-21  6:05 ` [PATCH v2 3/3] ARM: i.MX8MQ: Add node for " Andrey Smirnov
@ 2018-09-24  7:05 ` Sascha Hauer
  2 siblings, 0 replies; 4+ messages in thread
From: Sascha Hauer @ 2018-09-24  7:05 UTC (permalink / raw)
  To: Andrey Smirnov; +Cc: barebox

On Thu, Sep 20, 2018 at 11:05:30PM -0700, Andrey Smirnov wrote:
> Add missing IMX8MQ_CLK_TMU_ROOT clock needed for CPU thermal sensor.
> 
> Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
> ---
> 
> Changes since [v1]:
> 
>     - None
> 
> [v1] http://lists.infradead.org/pipermail/barebox/2018-September/034788.html
> 
>  drivers/clk/imx/clk-imx8mq.c | 1 +
>  1 file changed, 1 insertion(+)

Applied, thanks

Sascha

> 
> diff --git a/drivers/clk/imx/clk-imx8mq.c b/drivers/clk/imx/clk-imx8mq.c
> index 782bbc256..0431f61f0 100644
> --- a/drivers/clk/imx/clk-imx8mq.c
> +++ b/drivers/clk/imx/clk-imx8mq.c
> @@ -572,6 +572,7 @@ static void __init imx8mq_clocks_init(struct device_node *ccm_node)
>  	clks[IMX8MQ_CLK_WDOG1_ROOT] = imx_clk_gate4("wdog1_root_clk", "wdog_div", base + 0x4530, 0);
>  	clks[IMX8MQ_CLK_WDOG2_ROOT] = imx_clk_gate4("wdog2_root_clk", "wdog_div", base + 0x4540, 0);
>  	clks[IMX8MQ_CLK_WDOG3_ROOT] = imx_clk_gate4("wdog3_root_clk", "wdog_div", base + 0x4550, 0);
> +	clks[IMX8MQ_CLK_TMU_ROOT] = imx_clk_gate4("tmu_root_clk", "ipg_root", base + 0x4620, 0);
>  
>  	clks[IMX8MQ_GPT_3M_CLK] = imx_clk_fixed_factor("gpt_3m", "osc_25m", 1, 8);
>  	clks[IMX8MQ_CLK_DRAM_ALT_ROOT] = imx_clk_fixed_factor("dram_alt_root", "dram_alt_div", 1, 4);
> -- 
> 2.17.1
> 
> 
> _______________________________________________
> barebox mailing list
> barebox@lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/barebox
> 

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^ permalink raw reply	[flat|nested] 4+ messages in thread

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2018-09-21  6:05 [PATCH v2 1/3] clk: i.MX8MQ: Add missing IMX8MQ_CLK_TMU_ROOT clock Andrey Smirnov
2018-09-21  6:05 ` [PATCH v2 2/3] aiodev: Port Linux driver for i.MX8MQ CPU thermal sensor Andrey Smirnov
2018-09-21  6:05 ` [PATCH v2 3/3] ARM: i.MX8MQ: Add node for " Andrey Smirnov
2018-09-24  7:05 ` [PATCH v2 1/3] clk: i.MX8MQ: Add missing IMX8MQ_CLK_TMU_ROOT clock Sascha Hauer

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