* [PATCH next v6 1/2] i2c: hisi: Add initial device tree support
@ 2022-10-18 7:30 Weilong Chen
2022-10-18 7:30 ` [PATCH next v6 2/2] dt-bindings: i2c: add entry for hisilicon,i2c-ascend910 Weilong Chen
2022-10-20 1:45 ` [PATCH next v6 1/2] i2c: hisi: Add initial device tree support Yicong Yang
0 siblings, 2 replies; 5+ messages in thread
From: Weilong Chen @ 2022-10-18 7:30 UTC (permalink / raw)
To: chenweilong, yangyicong, xuwei5, wsa, robh+dt, robh
Cc: linux-i2c, linux-kernel, devicetree
The HiSilicon I2C controller can be used on embedded platform, which
boot from devicetree.
Signed-off-by: Weilong Chen <chenweilong@huawei.com>
---
Change since v5:
- Use hisilicon,i2c-ascend910 as compatible string. For more information about
the SoC at https://e.huawei.com/en/products/cloud-computing-dc/atlas/ascend-910
Link: https://lore.kernel.org/linux-i2c/20220920072215.161331-1-chenweilong@huawei.com/
Change since v4:
- Remove the protection for the headers for ACPI/OF
Link: https://lore.kernel.org/lkml/20220909074842.281232-1-chenweilong@huawei.com/T/
drivers/i2c/busses/Kconfig | 2 +-
drivers/i2c/busses/i2c-hisi.c | 15 ++++++++++++++-
2 files changed, 15 insertions(+), 2 deletions(-)
diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
index 264e780ae32e..a2081c03f3c4 100644
--- a/drivers/i2c/busses/Kconfig
+++ b/drivers/i2c/busses/Kconfig
@@ -673,7 +673,7 @@ config I2C_HIGHLANDER
config I2C_HISI
tristate "HiSilicon I2C controller"
- depends on (ARM64 && ACPI) || COMPILE_TEST
+ depends on ARM64 || COMPILE_TEST
help
Say Y here if you want to have Hisilicon I2C controller support
available on the Kunpeng Server.
diff --git a/drivers/i2c/busses/i2c-hisi.c b/drivers/i2c/busses/i2c-hisi.c
index 76c3d8f6fc3c..d58a6d2f1bc6 100644
--- a/drivers/i2c/busses/i2c-hisi.c
+++ b/drivers/i2c/busses/i2c-hisi.c
@@ -5,6 +5,7 @@
* Copyright (c) 2021 HiSilicon Technologies Co., Ltd.
*/
+#include <linux/acpi.h>
#include <linux/bits.h>
#include <linux/bitfield.h>
#include <linux/completion.h>
@@ -13,6 +14,7 @@
#include <linux/io.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/property.h>
#include <linux/units.h>
@@ -483,17 +485,28 @@ static int hisi_i2c_probe(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_ACPI
static const struct acpi_device_id hisi_i2c_acpi_ids[] = {
{ "HISI03D1", 0 },
{ }
};
MODULE_DEVICE_TABLE(acpi, hisi_i2c_acpi_ids);
+#endif
+
+#ifdef CONFIG_OF
+static const struct of_device_id hisi_i2c_dts_ids[] = {
+ { .compatible = "hisilicon,i2c-ascend910", },
+ { }
+};
+MODULE_DEVICE_TABLE(of, hisi_i2c_dts_ids);
+#endif
static struct platform_driver hisi_i2c_driver = {
.probe = hisi_i2c_probe,
.driver = {
.name = "hisi-i2c",
- .acpi_match_table = hisi_i2c_acpi_ids,
+ .acpi_match_table = ACPI_PTR(hisi_i2c_acpi_ids),
+ .of_match_table = of_match_ptr(hisi_i2c_dts_ids),
},
};
module_platform_driver(hisi_i2c_driver);
--
2.31.GIT
^ permalink raw reply related [flat|nested] 5+ messages in thread
* [PATCH next v6 2/2] dt-bindings: i2c: add entry for hisilicon,i2c-ascend910
2022-10-18 7:30 [PATCH next v6 1/2] i2c: hisi: Add initial device tree support Weilong Chen
@ 2022-10-18 7:30 ` Weilong Chen
2022-10-20 1:52 ` Yicong Yang
2022-10-21 1:16 ` Rob Herring
2022-10-20 1:45 ` [PATCH next v6 1/2] i2c: hisi: Add initial device tree support Yicong Yang
1 sibling, 2 replies; 5+ messages in thread
From: Weilong Chen @ 2022-10-18 7:30 UTC (permalink / raw)
To: chenweilong, yangyicong, xuwei5, wsa, robh+dt, robh
Cc: linux-i2c, linux-kernel, devicetree
Add the new compatible for HiSilicon i2c.
Signed-off-by: Weilong Chen <chenweilong@huawei.com>
---
Change since v5:
- Use hisilicon,i2c-ascend910 as compatible string. For more information about
the SoC at https://e.huawei.com/en/products/cloud-computing-dc/atlas/ascend-910
- Alphabetic order the MAINTAINERS
Change since v4:
- Add description for SoC specific compatibles.
- Use the clock binding.
- Fix decimal, space, case, unused labels.
Link: https://lore.kernel.org/lkml/20220909074842.281232-1-chenweilong@huawei.com/T/#m4e1c915ead04f4e2e48d69131053a966801625db
.../bindings/i2c/hisilicon,i2c-xxx.yaml | 70 +++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 71 insertions(+)
create mode 100644 Documentation/devicetree/bindings/i2c/hisilicon,i2c-xxx.yaml
diff --git a/Documentation/devicetree/bindings/i2c/hisilicon,i2c-xxx.yaml b/Documentation/devicetree/bindings/i2c/hisilicon,i2c-xxx.yaml
new file mode 100644
index 000000000000..a7285ddc260d
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/hisilicon,i2c-xxx.yaml
@@ -0,0 +1,70 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/i2c/hisilicon,i2c-xxx.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: HiSilicon common IIC controller Device Tree Bindings
+
+maintainers:
+ - yangyicong@huawei.com
+
+allOf:
+ - $ref: /schemas/i2c/i2c-controller.yaml#
+
+properties:
+ compatible:
+ const: hisilicon,i2c-ascend910
+ description:
+ The HiSilicon common IIC controller can be used for many different
+ types of SoC such as Huawei Ascend AI series chips.
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-frequency:
+ default: 400000
+
+ i2c-sda-falling-time-ns:
+ default: 343
+
+ i2c-scl-falling-time-ns:
+ default: 203
+
+ i2c-sda-hold-time-ns:
+ default: 830
+
+ i2c-scl-rising-time-ns:
+ default: 365
+
+ i2c-digital-filter-width-ns:
+ default: 0
+
+required:
+ - compatible
+ - reg
+ - interrupts
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ i2c@5038b0000 {
+ compatible = "hisilicon,i2c-ascend910";
+ reg = <0x38b0000 0x10000>;
+ interrupts = <0x0 120 0x4>;
+ i2c-sda-falling-time-ns = <56>;
+ i2c-scl-falling-time-ns = <56>;
+ i2c-sda-hold-time-ns = <56>;
+ i2c-scl-rising-time-ns = <56>;
+ i2c-digital-filter;
+ i2c-digital-filter-width-ns = <0x0>;
+ clocks = <&alg_clk>;
+ clock-frequency = <400000>;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index ad32dc9c4822..961e4442fb08 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9211,6 +9211,7 @@ M: Yicong Yang <yangyicong@hisilicon.com>
L: linux-i2c@vger.kernel.org
S: Maintained
W: https://www.hisilicon.com
+F: Documentation/devicetree/bindings/i2c/hisilicon,i2c-xxx.yaml
F: drivers/i2c/busses/i2c-hisi.c
HISILICON LPC BUS DRIVER
--
2.31.GIT
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [PATCH next v6 1/2] i2c: hisi: Add initial device tree support
2022-10-18 7:30 [PATCH next v6 1/2] i2c: hisi: Add initial device tree support Weilong Chen
2022-10-18 7:30 ` [PATCH next v6 2/2] dt-bindings: i2c: add entry for hisilicon,i2c-ascend910 Weilong Chen
@ 2022-10-20 1:45 ` Yicong Yang
1 sibling, 0 replies; 5+ messages in thread
From: Yicong Yang @ 2022-10-20 1:45 UTC (permalink / raw)
To: Weilong Chen
Cc: linux-i2c, linux-kernel, devicetree, yangyicong, robh+dt, robh,
wsa, xuwei5
On 2022/10/18 15:30, Weilong Chen wrote:
> The HiSilicon I2C controller can be used on embedded platform, which
> boot from devicetree.
>
Still looks good to me:
Acked-by: Yicong Yang <yangyicong@hisilicon.com>
> Signed-off-by: Weilong Chen <chenweilong@huawei.com>
> ---
> Change since v5:
> - Use hisilicon,i2c-ascend910 as compatible string. For more information about
> the SoC at https://e.huawei.com/en/products/cloud-computing-dc/atlas/ascend-910
> Link: https://lore.kernel.org/linux-i2c/20220920072215.161331-1-chenweilong@huawei.com/
>
> Change since v4:
> - Remove the protection for the headers for ACPI/OF
> Link: https://lore.kernel.org/lkml/20220909074842.281232-1-chenweilong@huawei.com/T/
>
> drivers/i2c/busses/Kconfig | 2 +-
> drivers/i2c/busses/i2c-hisi.c | 15 ++++++++++++++-
> 2 files changed, 15 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
> index 264e780ae32e..a2081c03f3c4 100644
> --- a/drivers/i2c/busses/Kconfig
> +++ b/drivers/i2c/busses/Kconfig
> @@ -673,7 +673,7 @@ config I2C_HIGHLANDER
>
> config I2C_HISI
> tristate "HiSilicon I2C controller"
> - depends on (ARM64 && ACPI) || COMPILE_TEST
> + depends on ARM64 || COMPILE_TEST
> help
> Say Y here if you want to have Hisilicon I2C controller support
> available on the Kunpeng Server.
> diff --git a/drivers/i2c/busses/i2c-hisi.c b/drivers/i2c/busses/i2c-hisi.c
> index 76c3d8f6fc3c..d58a6d2f1bc6 100644
> --- a/drivers/i2c/busses/i2c-hisi.c
> +++ b/drivers/i2c/busses/i2c-hisi.c
> @@ -5,6 +5,7 @@
> * Copyright (c) 2021 HiSilicon Technologies Co., Ltd.
> */
>
> +#include <linux/acpi.h>
> #include <linux/bits.h>
> #include <linux/bitfield.h>
> #include <linux/completion.h>
> @@ -13,6 +14,7 @@
> #include <linux/io.h>
> #include <linux/module.h>
> #include <linux/mod_devicetable.h>
> +#include <linux/of.h>
> #include <linux/platform_device.h>
> #include <linux/property.h>
> #include <linux/units.h>
> @@ -483,17 +485,28 @@ static int hisi_i2c_probe(struct platform_device *pdev)
> return 0;
> }
>
> +#ifdef CONFIG_ACPI
> static const struct acpi_device_id hisi_i2c_acpi_ids[] = {
> { "HISI03D1", 0 },
> { }
> };
> MODULE_DEVICE_TABLE(acpi, hisi_i2c_acpi_ids);
> +#endif
> +
> +#ifdef CONFIG_OF
> +static const struct of_device_id hisi_i2c_dts_ids[] = {
> + { .compatible = "hisilicon,i2c-ascend910", },
> + { }
> +};
> +MODULE_DEVICE_TABLE(of, hisi_i2c_dts_ids);
> +#endif
>
> static struct platform_driver hisi_i2c_driver = {
> .probe = hisi_i2c_probe,
> .driver = {
> .name = "hisi-i2c",
> - .acpi_match_table = hisi_i2c_acpi_ids,
> + .acpi_match_table = ACPI_PTR(hisi_i2c_acpi_ids),
> + .of_match_table = of_match_ptr(hisi_i2c_dts_ids),
> },
> };
> module_platform_driver(hisi_i2c_driver);
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH next v6 2/2] dt-bindings: i2c: add entry for hisilicon,i2c-ascend910
2022-10-18 7:30 ` [PATCH next v6 2/2] dt-bindings: i2c: add entry for hisilicon,i2c-ascend910 Weilong Chen
@ 2022-10-20 1:52 ` Yicong Yang
2022-10-21 1:16 ` Rob Herring
1 sibling, 0 replies; 5+ messages in thread
From: Yicong Yang @ 2022-10-20 1:52 UTC (permalink / raw)
To: Weilong Chen
Cc: linux-i2c, linux-kernel, devicetree, yangyicong, wsa, robh,
robh+dt, xuwei5
On 2022/10/18 15:30, Weilong Chen wrote:
> Add the new compatible for HiSilicon i2c.
>
> Signed-off-by: Weilong Chen <chenweilong@huawei.com>
> ---
> Change since v5:
> - Use hisilicon,i2c-ascend910 as compatible string. For more information about
> the SoC at https://e.huawei.com/en/products/cloud-computing-dc/atlas/ascend-910
> - Alphabetic order the MAINTAINERS
>
> Change since v4:
> - Add description for SoC specific compatibles.
> - Use the clock binding.
> - Fix decimal, space, case, unused labels.
> Link: https://lore.kernel.org/lkml/20220909074842.281232-1-chenweilong@huawei.com/T/#m4e1c915ead04f4e2e48d69131053a966801625db
>
> .../bindings/i2c/hisilicon,i2c-xxx.yaml | 70 +++++++++++++++++++
The file name may look a bit strange, but anyway the doc itself looks good to me.
Reviewed-by: Yicong Yang <yangyicong@hisilicon.com>
> MAINTAINERS | 1 +
> 2 files changed, 71 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/i2c/hisilicon,i2c-xxx.yaml
>
> diff --git a/Documentation/devicetree/bindings/i2c/hisilicon,i2c-xxx.yaml b/Documentation/devicetree/bindings/i2c/hisilicon,i2c-xxx.yaml
> new file mode 100644
> index 000000000000..a7285ddc260d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/i2c/hisilicon,i2c-xxx.yaml
> @@ -0,0 +1,70 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/i2c/hisilicon,i2c-xxx.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: HiSilicon common IIC controller Device Tree Bindings
> +
> +maintainers:
> + - yangyicong@huawei.com
> +
> +allOf:
> + - $ref: /schemas/i2c/i2c-controller.yaml#
> +
> +properties:
> + compatible:
> + const: hisilicon,i2c-ascend910
> + description:
> + The HiSilicon common IIC controller can be used for many different
> + types of SoC such as Huawei Ascend AI series chips.
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + clocks:
> + maxItems: 1
> +
> + clock-frequency:
> + default: 400000
> +
> + i2c-sda-falling-time-ns:
> + default: 343
> +
> + i2c-scl-falling-time-ns:
> + default: 203
> +
> + i2c-sda-hold-time-ns:
> + default: 830
> +
> + i2c-scl-rising-time-ns:
> + default: 365
> +
> + i2c-digital-filter-width-ns:
> + default: 0
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> +
> +unevaluatedProperties: false
> +
> +examples:
> + - |
> + i2c@5038b0000 {
> + compatible = "hisilicon,i2c-ascend910";
> + reg = <0x38b0000 0x10000>;
> + interrupts = <0x0 120 0x4>;
> + i2c-sda-falling-time-ns = <56>;
> + i2c-scl-falling-time-ns = <56>;
> + i2c-sda-hold-time-ns = <56>;
> + i2c-scl-rising-time-ns = <56>;
> + i2c-digital-filter;
> + i2c-digital-filter-width-ns = <0x0>;
> + clocks = <&alg_clk>;
> + clock-frequency = <400000>;
> + };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index ad32dc9c4822..961e4442fb08 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -9211,6 +9211,7 @@ M: Yicong Yang <yangyicong@hisilicon.com>
> L: linux-i2c@vger.kernel.org
> S: Maintained
> W: https://www.hisilicon.com
> +F: Documentation/devicetree/bindings/i2c/hisilicon,i2c-xxx.yaml
> F: drivers/i2c/busses/i2c-hisi.c
>
> HISILICON LPC BUS DRIVER
>
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [PATCH next v6 2/2] dt-bindings: i2c: add entry for hisilicon,i2c-ascend910
2022-10-18 7:30 ` [PATCH next v6 2/2] dt-bindings: i2c: add entry for hisilicon,i2c-ascend910 Weilong Chen
2022-10-20 1:52 ` Yicong Yang
@ 2022-10-21 1:16 ` Rob Herring
1 sibling, 0 replies; 5+ messages in thread
From: Rob Herring @ 2022-10-21 1:16 UTC (permalink / raw)
To: Weilong Chen; +Cc: yangyicong, xuwei5, wsa, linux-i2c, linux-kernel, devicetree
On Tue, Oct 18, 2022 at 03:30:12PM +0800, Weilong Chen wrote:
> Add the new compatible for HiSilicon i2c.
>
> Signed-off-by: Weilong Chen <chenweilong@huawei.com>
> ---
> Change since v5:
> - Use hisilicon,i2c-ascend910 as compatible string. For more information about
> the SoC at https://e.huawei.com/en/products/cloud-computing-dc/atlas/ascend-910
> - Alphabetic order the MAINTAINERS
>
> Change since v4:
> - Add description for SoC specific compatibles.
> - Use the clock binding.
> - Fix decimal, space, case, unused labels.
> Link: https://lore.kernel.org/lkml/20220909074842.281232-1-chenweilong@huawei.com/T/#m4e1c915ead04f4e2e48d69131053a966801625db
>
> .../bindings/i2c/hisilicon,i2c-xxx.yaml | 70 +++++++++++++++++++
hisilicon,i2c-ascend910.yaml
> MAINTAINERS | 1 +
> 2 files changed, 71 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/i2c/hisilicon,i2c-xxx.yaml
>
> diff --git a/Documentation/devicetree/bindings/i2c/hisilicon,i2c-xxx.yaml b/Documentation/devicetree/bindings/i2c/hisilicon,i2c-xxx.yaml
> new file mode 100644
> index 000000000000..a7285ddc260d
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/i2c/hisilicon,i2c-xxx.yaml
> @@ -0,0 +1,70 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/i2c/hisilicon,i2c-xxx.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: HiSilicon common IIC controller Device Tree Bindings
'HiSilicon common I2C controller'
> +
> +maintainers:
> + - yangyicong@huawei.com
Name and email please.
> +
> +allOf:
> + - $ref: /schemas/i2c/i2c-controller.yaml#
> +
> +properties:
> + compatible:
> + const: hisilicon,i2c-ascend910
> + description:
> + The HiSilicon common IIC controller can be used for many different
I2C
> + types of SoC such as Huawei Ascend AI series chips.
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + clocks:
> + maxItems: 1
> +
> + clock-frequency:
> + default: 400000
> +
> + i2c-sda-falling-time-ns:
> + default: 343
> +
> + i2c-scl-falling-time-ns:
> + default: 203
> +
> + i2c-sda-hold-time-ns:
> + default: 830
> +
> + i2c-scl-rising-time-ns:
> + default: 365
> +
> + i2c-digital-filter-width-ns:
> + default: 0
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> +
> +unevaluatedProperties: false
> +
> +examples:
> + - |
> + i2c@5038b0000 {
> + compatible = "hisilicon,i2c-ascend910";
> + reg = <0x38b0000 0x10000>;
> + interrupts = <0x0 120 0x4>;
> + i2c-sda-falling-time-ns = <56>;
> + i2c-scl-falling-time-ns = <56>;
> + i2c-sda-hold-time-ns = <56>;
> + i2c-scl-rising-time-ns = <56>;
> + i2c-digital-filter;
> + i2c-digital-filter-width-ns = <0x0>;
> + clocks = <&alg_clk>;
> + clock-frequency = <400000>;
> + };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index ad32dc9c4822..961e4442fb08 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -9211,6 +9211,7 @@ M: Yicong Yang <yangyicong@hisilicon.com>
> L: linux-i2c@vger.kernel.org
> S: Maintained
> W: https://www.hisilicon.com
> +F: Documentation/devicetree/bindings/i2c/hisilicon,i2c-xxx.yaml
> F: drivers/i2c/busses/i2c-hisi.c
>
> HISILICON LPC BUS DRIVER
> --
> 2.31.GIT
>
>
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2022-10-21 1:16 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-10-18 7:30 [PATCH next v6 1/2] i2c: hisi: Add initial device tree support Weilong Chen
2022-10-18 7:30 ` [PATCH next v6 2/2] dt-bindings: i2c: add entry for hisilicon,i2c-ascend910 Weilong Chen
2022-10-20 1:52 ` Yicong Yang
2022-10-21 1:16 ` Rob Herring
2022-10-20 1:45 ` [PATCH next v6 1/2] i2c: hisi: Add initial device tree support Yicong Yang
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).