* [PATCH v2 1/3] arm64: dts: meson: add reset controller for Meson-A1 SoC
2019-09-23 8:34 [PATCH v2 0/3] reset: meson: add Meson-A1 SoC support Xingyu Chen
@ 2019-09-23 8:34 ` Xingyu Chen
2019-09-23 8:34 ` [PATCH v2 2/3] dt-bindings: reset: add bindings for the Meson-A1 SoC Reset Controller Xingyu Chen
2019-09-23 8:34 ` [PATCH v2 3/3] reset: add support " Xingyu Chen
2 siblings, 0 replies; 8+ messages in thread
From: Xingyu Chen @ 2019-09-23 8:34 UTC (permalink / raw)
To: Philipp Zabel, Kevin Hilman, Neil Armstrong
Cc: devicetree, Hanjie Lin, Jianxin Pan, linux-kernel, Rob Herring,
linux-arm-kernel, linux-amlogic, Xingyu Chen, Jerome Brunet
Add the reset controller device of Meson-A1 SoC family
Signed-off-by: Xingyu Chen <xingyu.chen@amlogic.com>
Signed-off-by: Jianxin Pan <jianxin.pan@amlogic.com>
---
arch/arm64/boot/dts/amlogic/meson-a1.dtsi | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
index 7210ad0..1c588ab 100644
--- a/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-a1.dtsi
@@ -74,6 +74,12 @@
#size-cells = <2>;
ranges = <0x0 0x0 0x0 0xfe000000 0x0 0x1000000>;
+ reset: reset-controller@0 {
+ compatible = "amlogic,meson-a1-reset";
+ reg = <0x0 0x0 0x0 0x8c>;
+ #reset-cells = <1>;
+ };
+
uart_AO: serial@1c00 {
compatible = "amlogic,meson-gx-uart",
"amlogic,meson-ao-uart";
--
2.7.4
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^ permalink raw reply related [flat|nested] 8+ messages in thread* [PATCH v2 2/3] dt-bindings: reset: add bindings for the Meson-A1 SoC Reset Controller
2019-09-23 8:34 [PATCH v2 0/3] reset: meson: add Meson-A1 SoC support Xingyu Chen
2019-09-23 8:34 ` [PATCH v2 1/3] arm64: dts: meson: add reset controller for Meson-A1 SoC Xingyu Chen
@ 2019-09-23 8:34 ` Xingyu Chen
2019-09-25 22:55 ` Kevin Hilman
2019-09-23 8:34 ` [PATCH v2 3/3] reset: add support " Xingyu Chen
2 siblings, 1 reply; 8+ messages in thread
From: Xingyu Chen @ 2019-09-23 8:34 UTC (permalink / raw)
To: Philipp Zabel, Kevin Hilman, Neil Armstrong
Cc: devicetree, Hanjie Lin, Jianxin Pan, linux-kernel, Rob Herring,
linux-arm-kernel, linux-amlogic, Xingyu Chen, Jerome Brunet
Add DT bindings for the Meson-A1 SoC Reset Controller include file,
and also slightly update documentation.
Signed-off-by: Xingyu Chen <xingyu.chen@amlogic.com>
Signed-off-by: Jianxin Pan <jianxin.pan@amlogic.com>
---
.../bindings/reset/amlogic,meson-reset.yaml | 1 +
include/dt-bindings/reset/amlogic,meson-a1-reset.h | 59 ++++++++++++++++++++++
2 files changed, 60 insertions(+)
create mode 100644 include/dt-bindings/reset/amlogic,meson-a1-reset.h
diff --git a/Documentation/devicetree/bindings/reset/amlogic,meson-reset.yaml b/Documentation/devicetree/bindings/reset/amlogic,meson-reset.yaml
index 00917d8..b3f57d8 100644
--- a/Documentation/devicetree/bindings/reset/amlogic,meson-reset.yaml
+++ b/Documentation/devicetree/bindings/reset/amlogic,meson-reset.yaml
@@ -16,6 +16,7 @@ properties:
- amlogic,meson8b-reset # Reset Controller on Meson8b and compatible SoCs
- amlogic,meson-gxbb-reset # Reset Controller on GXBB and compatible SoCs
- amlogic,meson-axg-reset # Reset Controller on AXG and compatible SoCs
+ - amlogic,meson-a1-reset # Reset Controller on A1 and compatible SoCs
reg:
maxItems: 1
diff --git a/include/dt-bindings/reset/amlogic,meson-a1-reset.h b/include/dt-bindings/reset/amlogic,meson-a1-reset.h
new file mode 100644
index 00000000..8d76a47
--- /dev/null
+++ b/include/dt-bindings/reset/amlogic,meson-a1-reset.h
@@ -0,0 +1,59 @@
+/* SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+ *
+ * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
+ * Author: Xingyu Chen <xingyu.chen@amlogic.com>
+ *
+ */
+
+#ifndef _DT_BINDINGS_AMLOGIC_MESON_A1_RESET_H
+#define _DT_BINDINGS_AMLOGIC_MESON_A1_RESET_H
+
+/* RESET0 */
+#define RESET_AM2AXI_VAD 1
+#define RESET_PSRAM 4
+#define RESET_PAD_CTRL 5
+#define RESET_TEMP_SENSOR 7
+#define RESET_AM2AXI_DEV 8
+#define RESET_SPICC_A 10
+#define RESET_MSR_CLK 11
+#define RESET_AUDIO 12
+#define RESET_ANALOG_CTRL 13
+#define RESET_SAR_ADC 14
+#define RESET_AUDIO_VAD 15
+#define RESET_CEC 16
+#define RESET_PWM_EF 17
+#define RESET_PWM_CD 18
+#define RESET_PWM_AB 19
+#define RESET_IR_CTRL 21
+#define RESET_I2C_S_A 22
+#define RESET_I2C_M_D 24
+#define RESET_I2C_M_C 25
+#define RESET_I2C_M_B 26
+#define RESET_I2C_M_A 27
+#define RESET_I2C_PROD_AHB 28
+#define RESET_I2C_PROD 29
+
+/* RESET1 */
+#define RESET_ACODEC 32
+#define RESET_DMA 33
+#define RESET_SD_EMMC_A 34
+#define RESET_USBCTRL 36
+#define RESET_USBPHY 38
+#define RESET_RSA 42
+#define RESET_DMC 43
+#define RESET_IRQ_CTRL 45
+#define RESET_NIC_VAD 47
+#define RESET_NIC_AXI 48
+#define RESET_RAMA 49
+#define RESET_RAMB 50
+#define RESET_ROM 53
+#define RESET_SPIFC 54
+#define RESET_GIC 55
+#define RESET_UART_C 56
+#define RESET_UART_B 57
+#define RESET_UART_A 58
+#define RESET_OSC_RING 59
+
+/* RESET2 Reserved */
+
+#endif
--
2.7.4
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^ permalink raw reply related [flat|nested] 8+ messages in thread* Re: [PATCH v2 2/3] dt-bindings: reset: add bindings for the Meson-A1 SoC Reset Controller
2019-09-23 8:34 ` [PATCH v2 2/3] dt-bindings: reset: add bindings for the Meson-A1 SoC Reset Controller Xingyu Chen
@ 2019-09-25 22:55 ` Kevin Hilman
2019-09-26 3:40 ` Xingyu Chen
0 siblings, 1 reply; 8+ messages in thread
From: Kevin Hilman @ 2019-09-25 22:55 UTC (permalink / raw)
To: Xingyu Chen, Philipp Zabel, Neil Armstrong
Cc: devicetree, Hanjie Lin, Jianxin Pan, linux-kernel, Rob Herring,
linux-arm-kernel, linux-amlogic, Xingyu Chen, Jerome Brunet
Xingyu Chen <xingyu.chen@amlogic.com> writes:
> Add DT bindings for the Meson-A1 SoC Reset Controller include file,
> and also slightly update documentation.
>
> Signed-off-by: Xingyu Chen <xingyu.chen@amlogic.com>
> Signed-off-by: Jianxin Pan <jianxin.pan@amlogic.com>
The order here doesn't look right. As the sender, your sign-off should
be last. Is Jianxin the author or are you? If Jianxin, there should be
a "From:" line at the beginning of the changelog to indicate authorship
that's different from the sender.
> ---
> .../bindings/reset/amlogic,meson-reset.yaml | 1 +
> include/dt-bindings/reset/amlogic,meson-a1-reset.h | 59 ++++++++++++++++++++++
> 2 files changed, 60 insertions(+)
> create mode 100644 include/dt-bindings/reset/amlogic,meson-a1-reset.h
>
> diff --git a/Documentation/devicetree/bindings/reset/amlogic,meson-reset.yaml b/Documentation/devicetree/bindings/reset/amlogic,meson-reset.yaml
> index 00917d8..b3f57d8 100644
> --- a/Documentation/devicetree/bindings/reset/amlogic,meson-reset.yaml
> +++ b/Documentation/devicetree/bindings/reset/amlogic,meson-reset.yaml
> @@ -16,6 +16,7 @@ properties:
> - amlogic,meson8b-reset # Reset Controller on Meson8b and compatible SoCs
> - amlogic,meson-gxbb-reset # Reset Controller on GXBB and compatible SoCs
> - amlogic,meson-axg-reset # Reset Controller on AXG and compatible SoCs
> + - amlogic,meson-a1-reset # Reset Controller on A1 and compatible SoCs
>
> reg:
> maxItems: 1
> diff --git a/include/dt-bindings/reset/amlogic,meson-a1-reset.h b/include/dt-bindings/reset/amlogic,meson-a1-reset.h
> new file mode 100644
> index 00000000..8d76a47
> --- /dev/null
> +++ b/include/dt-bindings/reset/amlogic,meson-a1-reset.h
> @@ -0,0 +1,59 @@
> +/* SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> + *
> + * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
> + * Author: Xingyu Chen <xingyu.chen@amlogic.com>
> + *
> + */
> +
> +#ifndef _DT_BINDINGS_AMLOGIC_MESON_A1_RESET_H
> +#define _DT_BINDINGS_AMLOGIC_MESON_A1_RESET_H
> +
> +/* RESET0 */
> +#define RESET_AM2AXI_VAD 1
minor nit: can you use comments/whitespace here to indicate holes?
Please see the other amlogic files in this dir for examples.
Kevin
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http://lists.infradead.org/mailman/listinfo/linux-amlogic
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH v2 2/3] dt-bindings: reset: add bindings for the Meson-A1 SoC Reset Controller
2019-09-25 22:55 ` Kevin Hilman
@ 2019-09-26 3:40 ` Xingyu Chen
0 siblings, 0 replies; 8+ messages in thread
From: Xingyu Chen @ 2019-09-26 3:40 UTC (permalink / raw)
To: Kevin Hilman, Philipp Zabel, Neil Armstrong
Cc: devicetree, Hanjie Lin, Jianxin Pan, linux-kernel, Rob Herring,
linux-amlogic, linux-arm-kernel, Jerome Brunet
Hi, Kevin
Thanks for your review
On 2019/9/26 6:55, Kevin Hilman wrote:
> Xingyu Chen <xingyu.chen@amlogic.com> writes:
>
>> Add DT bindings for the Meson-A1 SoC Reset Controller include file,
>> and also slightly update documentation.
>>
>> Signed-off-by: Xingyu Chen <xingyu.chen@amlogic.com>
>> Signed-off-by: Jianxin Pan <jianxin.pan@amlogic.com>
>
> The order here doesn't look right. As the sender, your sign-off should
> be last. Is Jianxin the author or are you? If Jianxin, there should be
> a "From:" line at the beginning of the changelog to indicate authorship
> that's different from the sender.
I am an author for this patchset, i will reorder Signed-off in next version.
>
>> ---
>> .../bindings/reset/amlogic,meson-reset.yaml | 1 +
>> include/dt-bindings/reset/amlogic,meson-a1-reset.h | 59 ++++++++++++++++++++++
>> 2 files changed, 60 insertions(+)
>> create mode 100644 include/dt-bindings/reset/amlogic,meson-a1-reset.h
>>
>> diff --git a/Documentation/devicetree/bindings/reset/amlogic,meson-reset.yaml b/Documentation/devicetree/bindings/reset/amlogic,meson-reset.yaml
>> index 00917d8..b3f57d8 100644
>> --- a/Documentation/devicetree/bindings/reset/amlogic,meson-reset.yaml
>> +++ b/Documentation/devicetree/bindings/reset/amlogic,meson-reset.yaml
>> @@ -16,6 +16,7 @@ properties:
>> - amlogic,meson8b-reset # Reset Controller on Meson8b and compatible SoCs
>> - amlogic,meson-gxbb-reset # Reset Controller on GXBB and compatible SoCs
>> - amlogic,meson-axg-reset # Reset Controller on AXG and compatible SoCs
>> + - amlogic,meson-a1-reset # Reset Controller on A1 and compatible SoCs
>>
>> reg:
>> maxItems: 1
>> diff --git a/include/dt-bindings/reset/amlogic,meson-a1-reset.h b/include/dt-bindings/reset/amlogic,meson-a1-reset.h
>> new file mode 100644
>> index 00000000..8d76a47
>> --- /dev/null
>> +++ b/include/dt-bindings/reset/amlogic,meson-a1-reset.h
>> @@ -0,0 +1,59 @@
>> +/* SPDX-License-Identifier: (GPL-2.0+ OR MIT)
>> + *
>> + * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
>> + * Author: Xingyu Chen <xingyu.chen@amlogic.com>
>> + *
>> + */
>> +
>> +#ifndef _DT_BINDINGS_AMLOGIC_MESON_A1_RESET_H
>> +#define _DT_BINDINGS_AMLOGIC_MESON_A1_RESET_H
>> +
>> +/* RESET0 */
>> +#define RESET_AM2AXI_VAD 1
>
> minor nit: can you use comments/whitespace here to indicate holes?
> Please see the other amlogic files in this dir for examples.
I will fix it in next version.
>
> Kevin
>
> .
>
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^ permalink raw reply [flat|nested] 8+ messages in thread
* [PATCH v2 3/3] reset: add support for the Meson-A1 SoC Reset Controller
2019-09-23 8:34 [PATCH v2 0/3] reset: meson: add Meson-A1 SoC support Xingyu Chen
2019-09-23 8:34 ` [PATCH v2 1/3] arm64: dts: meson: add reset controller for Meson-A1 SoC Xingyu Chen
2019-09-23 8:34 ` [PATCH v2 2/3] dt-bindings: reset: add bindings for the Meson-A1 SoC Reset Controller Xingyu Chen
@ 2019-09-23 8:34 ` Xingyu Chen
2019-09-25 22:57 ` Kevin Hilman
2 siblings, 1 reply; 8+ messages in thread
From: Xingyu Chen @ 2019-09-23 8:34 UTC (permalink / raw)
To: Philipp Zabel, Kevin Hilman, Neil Armstrong
Cc: Hanjie Lin, Jianxin Pan, linux-kernel, Rob Herring,
linux-arm-kernel, linux-amlogic, Xingyu Chen, Jerome Brunet
The number of RESET registers and offset of RESET_LEVEL register for
Meson-A1 are different from previous SoCs, In order to describe these
differences, we introduce the struct meson_reset_param.
Signed-off-by: Xingyu Chen <xingyu.chen@amlogic.com>
Signed-off-by: Jianxin Pan <jianxin.pan@amlogic.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
---
drivers/reset/reset-meson.c | 35 ++++++++++++++++++++++++++++-------
1 file changed, 28 insertions(+), 7 deletions(-)
diff --git a/drivers/reset/reset-meson.c b/drivers/reset/reset-meson.c
index 7d05d76..94d7ba8 100644
--- a/drivers/reset/reset-meson.c
+++ b/drivers/reset/reset-meson.c
@@ -15,12 +15,16 @@
#include <linux/types.h>
#include <linux/of_device.h>
-#define REG_COUNT 8
#define BITS_PER_REG 32
-#define LEVEL_OFFSET 0x7c
+
+struct meson_reset_param {
+ int reg_count;
+ int level_offset;
+};
struct meson_reset {
void __iomem *reg_base;
+ const struct meson_reset_param *param;
struct reset_controller_dev rcdev;
spinlock_t lock;
};
@@ -46,10 +50,12 @@ static int meson_reset_level(struct reset_controller_dev *rcdev,
container_of(rcdev, struct meson_reset, rcdev);
unsigned int bank = id / BITS_PER_REG;
unsigned int offset = id % BITS_PER_REG;
- void __iomem *reg_addr = data->reg_base + LEVEL_OFFSET + (bank << 2);
+ void __iomem *reg_addr;
unsigned long flags;
u32 reg;
+ reg_addr = data->reg_base + data->param->level_offset + (bank << 2);
+
spin_lock_irqsave(&data->lock, flags);
reg = readl(reg_addr);
@@ -81,10 +87,21 @@ static const struct reset_control_ops meson_reset_ops = {
.deassert = meson_reset_deassert,
};
+static const struct meson_reset_param meson8b_param = {
+ .reg_count = 8,
+ .level_offset = 0x7c,
+};
+
+static const struct meson_reset_param meson_a1_param = {
+ .reg_count = 3,
+ .level_offset = 0x40,
+};
+
static const struct of_device_id meson_reset_dt_ids[] = {
- { .compatible = "amlogic,meson8b-reset" },
- { .compatible = "amlogic,meson-gxbb-reset" },
- { .compatible = "amlogic,meson-axg-reset" },
+ { .compatible = "amlogic,meson8b-reset", .data = &meson8b_param},
+ { .compatible = "amlogic,meson-gxbb-reset", .data = &meson8b_param},
+ { .compatible = "amlogic,meson-axg-reset", .data = &meson8b_param},
+ { .compatible = "amlogic,meson-a1-reset", .data = &meson_a1_param},
{ /* sentinel */ },
};
@@ -102,12 +119,16 @@ static int meson_reset_probe(struct platform_device *pdev)
if (IS_ERR(data->reg_base))
return PTR_ERR(data->reg_base);
+ data->param = of_device_get_match_data(&pdev->dev);
+ if (!data->param)
+ return -ENODEV;
+
platform_set_drvdata(pdev, data);
spin_lock_init(&data->lock);
data->rcdev.owner = THIS_MODULE;
- data->rcdev.nr_resets = REG_COUNT * BITS_PER_REG;
+ data->rcdev.nr_resets = data->param->reg_count * BITS_PER_REG;
data->rcdev.ops = &meson_reset_ops;
data->rcdev.of_node = pdev->dev.of_node;
--
2.7.4
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^ permalink raw reply related [flat|nested] 8+ messages in thread* Re: [PATCH v2 3/3] reset: add support for the Meson-A1 SoC Reset Controller
2019-09-23 8:34 ` [PATCH v2 3/3] reset: add support " Xingyu Chen
@ 2019-09-25 22:57 ` Kevin Hilman
2019-09-26 3:44 ` Xingyu Chen
0 siblings, 1 reply; 8+ messages in thread
From: Kevin Hilman @ 2019-09-25 22:57 UTC (permalink / raw)
To: Xingyu Chen, Philipp Zabel, Neil Armstrong
Cc: Hanjie Lin, Jianxin Pan, linux-kernel, Rob Herring,
linux-arm-kernel, linux-amlogic, Xingyu Chen, Jerome Brunet
Hi Xingyu,
Xingyu Chen <xingyu.chen@amlogic.com> writes:
> The number of RESET registers and offset of RESET_LEVEL register for
> Meson-A1 are different from previous SoCs, In order to describe these
> differences, we introduce the struct meson_reset_param.
>
> Signed-off-by: Xingyu Chen <xingyu.chen@amlogic.com>
> Signed-off-by: Jianxin Pan <jianxin.pan@amlogic.com>
> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Again, order here isn't quite right. Add the reviewed-by tags first,
and the sender should be the last sign-off.
Other than that, driver looks good.
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Kevin
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^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [PATCH v2 3/3] reset: add support for the Meson-A1 SoC Reset Controller
2019-09-25 22:57 ` Kevin Hilman
@ 2019-09-26 3:44 ` Xingyu Chen
0 siblings, 0 replies; 8+ messages in thread
From: Xingyu Chen @ 2019-09-26 3:44 UTC (permalink / raw)
To: Kevin Hilman, Philipp Zabel, Neil Armstrong
Cc: Hanjie Lin, Jianxin Pan, linux-kernel, Rob Herring,
linux-amlogic, linux-arm-kernel, Jerome Brunet
Hi, Kevin
Thanks for your reminder
On 2019/9/26 6:57, Kevin Hilman wrote:
> Hi Xingyu,
>
> Xingyu Chen <xingyu.chen@amlogic.com> writes:
>
>> The number of RESET registers and offset of RESET_LEVEL register for
>> Meson-A1 are different from previous SoCs, In order to describe these
>> differences, we introduce the struct meson_reset_param.
>>
>> Signed-off-by: Xingyu Chen <xingyu.chen@amlogic.com>
>> Signed-off-by: Jianxin Pan <jianxin.pan@amlogic.com>
>> Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
>
> Again, order here isn't quite right. Add the reviewed-by tags first,
> and the sender should be the last sign-off.
I will reorder Signed-off and Reviewed in next version
>
> Other than that, driver looks good.
>
> Reviewed-by: Kevin Hilman <khilman@baylibre.com >
> Kevin
>
> .
>
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^ permalink raw reply [flat|nested] 8+ messages in thread