[PATCH 0/3] Add LECARC ACPI IDs for DesignWare GPIO, SPI, I2C

[PATCH 0/3] Add LECARC ACPI IDs for DesignWare GPIO, SPI, I2C

[thomas]

This patch series adds ACPI identification for LECARC SoCs that
integrate Synopsys DesignWare peripherals.

LECARC platforms use the following ACPI HIDs:
- GPIO: LECA0001 (V1 register offsets)
- SPI:  LECA0002 (requires custom init function)
- I2C:  LECA0003

The patches are independent but share a common dependency on the
ACPI description file (drivers/acpi/acpi_apd.c) for SPI and I2C.
To avoid merge conflicts, they are submitted as a single series
with the following order:

Patch 1: gpio: dwapb – add LECA0001 to dwapb_acpi_match[].
Patch 2: spi: dw-mmio – add LECA0002 and dw_spi_lecarc_init(),
         plus corresponding entry in acpi_apd.c.
Patch 3: i2c: designware – add LECA0003 to dw_i2c_acpi_match[],
         plus corresponding entry in acpi_apd.c.

All changes have been tested on LECARC evaluation board with
kernel v7.0.0-rc6. No regressions observed on existing hardware.

Please apply.

thomas (3):
  gpio: dwapb: Add LECARC ACPI ID
  spi: dw-mmio: Add LECARC ACPI ID and init hook
  i2c: designware: Add LECARC ACPI ID

 drivers/acpi/acpi_apd.c                     | 12 ++++++++++++
 drivers/gpio/gpio-dwapb.c                   |  1 +
 drivers/i2c/busses/i2c-designware-platdrv.c |  1 +
 drivers/spi/spi-dw-mmio.c                   |  9 +++++++++
 4 files changed, 23 insertions(+)

--
2.43.0

[PATCH 1/3] gpio: dwapb: Add LECARC ACPI ID

[thomas]

Add ACPI ID "LECA0001" for LECARC SoCs that use the DesignWare GPIO
controller with V1 register offsets.

Signed-off-by: thomas <thomas_lin@lecomputing.com>
---
 drivers/gpio/gpio-dwapb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
index 15cebc8b5d66..c1f3d83a67c1 100644
--- a/drivers/gpio/gpio-dwapb.c
+++ b/drivers/gpio/gpio-dwapb.c
@@ -694,6 +694,7 @@ static const struct acpi_device_id dwapb_acpi_match[] = {
 	{"APMC0D07", GPIO_REG_OFFSET_V1},
 	{"APMC0D81", GPIO_REG_OFFSET_V2},
 	{"FUJI200A", GPIO_REG_OFFSET_V1},
+	{"LECA0001", GPIO_REG_OFFSET_V1},
 	{ }
 };
 MODULE_DEVICE_TABLE(acpi, dwapb_acpi_match);
-- 
2.43.0

[PATCH 2/3] spi: dw-mmio: Add LECARC ACPI ID and init hook

[thomas]

Add ACPI ID "LECA0002" for LECARC SoCs. This ID requires a custom
initialization function dw_spi_lecarc_init() that sets dws->dws.ip
to DW_HSSI_ID.

Also add corresponding ACPI description in acpi_apd.c.

Signed-off-by: thomas <thomas_lin@lecomputing.com>
---
 drivers/acpi/acpi_apd.c   | 7 +++++++
 drivers/spi/spi-dw-mmio.c | 9 +++++++++
 2 files changed, 16 insertions(+)

diff --git a/drivers/acpi/acpi_apd.c b/drivers/acpi/acpi_apd.c
index bed0791c17fc..3a80e833215e 100644
--- a/drivers/acpi/acpi_apd.c
+++ b/drivers/acpi/acpi_apd.c
@@ -181,6 +181,12 @@ static const struct apd_device_desc hip08_spi_desc = {
 	.setup = acpi_apd_setup,
 	.fixed_clk_rate = 250000000,
 };
+
+static const struct apd_device_desc leca_spi_desc = {
+	.setup = acpi_apd_setup,
+	.fixed_clk_rate = 400000000,
+};
+
 #endif /* CONFIG_ARM64 */
 
 #endif
@@ -252,6 +258,7 @@ static const struct acpi_device_id acpi_apd_device_ids[] = {
 	{ "HISI02A3", APD_ADDR(hip08_lite_i2c_desc) },
 	{ "HISI0173", APD_ADDR(hip08_spi_desc) },
 	{ "NXP0001", APD_ADDR(nxp_i2c_desc) },
+	{ "LECA0002", APD_ADDR(leca_spi_desc) },
 #endif
 	{ }
 };
diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c
index 1bfdf24c3227..50b50553b360 100644
--- a/drivers/spi/spi-dw-mmio.c
+++ b/drivers/spi/spi-dw-mmio.c
@@ -234,6 +234,14 @@ static int dw_spi_intel_init(struct platform_device *pdev,
 	return 0;
 }
 
+static int dw_spi_lecarc_init(struct platform_device *pdev,
+			     struct dw_spi_mmio *dwsmmio)
+{
+	dwsmmio->dws.ip = DW_HSSI_ID;
+
+	return 0;
+}
+
 /*
  * DMA-based mem ops are not configured for this device and are not tested.
  */
@@ -453,6 +461,7 @@ MODULE_DEVICE_TABLE(of, dw_spi_mmio_of_match);
 #ifdef CONFIG_ACPI
 static const struct acpi_device_id dw_spi_mmio_acpi_match[] = {
 	{"HISI0173", (kernel_ulong_t)dw_spi_pssi_init},
+	{"LECA0002", (kernel_ulong_t)dw_spi_lecarc_init},
 	{},
 };
 MODULE_DEVICE_TABLE(acpi, dw_spi_mmio_acpi_match);
-- 
2.43.0

Re: [PATCH 2/3] spi: dw-mmio: Add LECARC ACPI ID and init hook

[Andy Shevchenko]

On Thu, May 14, 2026 at 10:40:11AM +0800, thomas wrote:
> Add ACPI ID "LECA0002" for LECARC SoCs. This ID requires a custom
> initialization function dw_spi_lecarc_init() that sets dws->dws.ip
> to DW_HSSI_ID.
> 
> Also add corresponding ACPI description in acpi_apd.c.

...

>  	{ "HISI02A3", APD_ADDR(hip08_lite_i2c_desc) },
>  	{ "HISI0173", APD_ADDR(hip08_spi_desc) },
>  	{ "NXP0001", APD_ADDR(nxp_i2c_desc) },
> +	{ "LECA0002", APD_ADDR(leca_spi_desc) },

Keep them ordered or close enough to be ordered. Id est in this case
locate it before NXP.

...

> +static int dw_spi_lecarc_init(struct platform_device *pdev,
> +			     struct dw_spi_mmio *dwsmmio)
> +{
> +	dwsmmio->dws.ip = DW_HSSI_ID;
> +
> +	return 0;
> +}

dw_spi_intel_init() is the same, why not reusing it?

Note, if uncomfortable with the name, make a patch to rename it to something like
dw_spi_hssi_no_dma_init().

-- 
With Best Regards,
Andy Shevchenko

[PATCH 3/3] i2c: designware: Add LECARC ACPI ID

[thomas]

Add ACPI ID "LECA0003" for LECARC SoCs that integrate the DesignWare
I2C controller.

Also add corresponding ACPI description in acpi_apd.c.

Signed-off-by: thomas <thomas_lin@lecomputing.com>
---
 drivers/acpi/acpi_apd.c                     | 5 +++++
 drivers/i2c/busses/i2c-designware-platdrv.c | 1 +
 2 files changed, 6 insertions(+)

diff --git a/drivers/acpi/acpi_apd.c b/drivers/acpi/acpi_apd.c
index 3a80e833215e..ae6a7da56e89 100644
--- a/drivers/acpi/acpi_apd.c
+++ b/drivers/acpi/acpi_apd.c
@@ -187,6 +187,10 @@ static const struct apd_device_desc leca_spi_desc = {
 	.fixed_clk_rate = 400000000,
 };
 
+static const struct apd_device_desc leca_i2c_desc = {
+	.setup = acpi_apd_setup,
+	.fixed_clk_rate = 250000000,
+};
 #endif /* CONFIG_ARM64 */
 
 #endif
@@ -259,6 +263,7 @@ static const struct acpi_device_id acpi_apd_device_ids[] = {
 	{ "HISI0173", APD_ADDR(hip08_spi_desc) },
 	{ "NXP0001", APD_ADDR(nxp_i2c_desc) },
 	{ "LECA0002", APD_ADDR(leca_spi_desc) },
+	{ "LECA0003", APD_ADDR(leca_i2c_desc) },
 #endif
 	{ }
 };
diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c
index 3351c4a9ef11..b435b4015f02 100644
--- a/drivers/i2c/busses/i2c-designware-platdrv.c
+++ b/drivers/i2c/busses/i2c-designware-platdrv.c
@@ -279,6 +279,7 @@ static const struct acpi_device_id dw_i2c_acpi_match[] = {
 	{ "INT3432", 0 },
 	{ "INT3433", 0 },
 	{ "INTC10EF", 0 },
+	{ "LECA0003", 0 },
 	{}
 };
 MODULE_DEVICE_TABLE(acpi, dw_i2c_acpi_match);
-- 
2.43.0

Re: [PATCH 3/3] i2c: designware: Add LECARC ACPI ID

[Andy Shevchenko]

On Thu, May 14, 2026 at 10:40:12AM +0800, thomas wrote:
> Add ACPI ID "LECA0003" for LECARC SoCs that integrate the DesignWare
> I2C controller.
> 
> Also add corresponding ACPI description in acpi_apd.c.

> Signed-off-by: thomas <thomas_lin@lecomputing.com>

Fix the name field in SoB, has to be your real name and not an alias.

Code wise, after rebasing on a new version of SPI patch (see comments there),
will be perfect.

-- 
With Best Regards,
Andy Shevchenko

Re: [PATCH 0/3] Add LECARC ACPI IDs for DesignWare GPIO, SPI, I2C

[Andy Shevchenko]

On Thu, May 14, 2026 at 10:40:09AM +0800, thomas wrote:

This is a v2 of the series (Mark commented on the wrong one AFAICS), please
make sure you do proper versioning and changelog is provided.

> This patch series adds ACPI identification for LECARC SoCs that
> integrate Synopsys DesignWare peripherals.
> 
> LECARC platforms use the following ACPI HIDs:
> - GPIO: LECA0001 (V1 register offsets)
> - SPI:  LECA0002 (requires custom init function)
> - I2C:  LECA0003
> 
> The patches are independent but share a common dependency on the
> ACPI description file (drivers/acpi/acpi_apd.c) for SPI and I2C.
> To avoid merge conflicts, they are submitted as a single series
> with the following order:

> Patch 1: gpio: dwapb – add LECA0001 to dwapb_acpi_match[].
> Patch 2: spi: dw-mmio – add LECA0002 and dw_spi_lecarc_init(),
>          plus corresponding entry in acpi_apd.c.
> Patch 3: i2c: designware – add LECA0003 to dw_i2c_acpi_match[],
>          plus corresponding entry in acpi_apd.c.

You have to fix your SoB. There should be your real name and not an alias.

> All changes have been tested on LECARC evaluation board with
> kernel v7.0.0-rc6. No regressions observed on existing hardware.

Otherwise I can confirm that LECA is officially registered ACPI vendor ID and
the IDs look legit (it's up to the company to map the device ID parts to
whatever devices they have properly).

When you address the SoB and other comments, I ack them.

-- 
With Best Regards,
Andy Shevchenko