[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 (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 – add LECA0001 to dwapb_gpio ACPI match table.
Patch 2: SPI   – add LECA0002 and dw_spi_lecarc_init() to spi-dw-mmio,
                 plus corresponding entry in acpi_apd.c.
Patch 3: I2C   – add LECA0003 to DesignWare I2C ACPI match table,
                 plus corresponding entry in acpi_apd.c.

All changes have been tested on LECARC evaluation board with
kernel v7.0.0-rc7. No regressions observed on existing hardware.

Rebase from v7.0.0-rc6 onto v7.0.0-rc7.

Please apply.

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

[thomas]

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] 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.

[thomas]

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

[PATCH 3/3] Add ACPI ID "LECA0003" for LECARC SoCs that integrate the DesignWare I2C controller.

[thomas]

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

[Mark Brown]

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On Thu, May 14, 2026 at 11:43:14AM +0800, thomas wrote:
> This patch series adds ACPI identification for LECARC SoCs that
> integrate Synopsys DesignWare peripherals.

Please submit patches using subject lines reflecting the style for the
subsystem, this makes it easier for people to identify relevant patches.
Look at what existing commits in the area you're changing are doing and
make sure your subject lines visually resemble what they're doing.
There's no need to resubmit to fix this alone.

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