[PATCH v3] net: cadence: macb: Add support for Raspberry Pi RP1 ethernet controller

[PATCH v3] net: cadence: macb: Add support for Raspberry Pi RP1 ethernet controller

[Stanimir Varbanov]

From: Dave Stevenson <dave.stevenson@raspberrypi.com>

The RP1 chip has the Cadence GEM block, but wants the tx_clock
to always run at 125MHz, in the same way as sama7g5.
Add the relevant configuration.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Stanimir Varbanov <svarbanov@suse.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
---
changes in v3:
 - Added Reviewed-by and Acked-by tags.
 - Split the patch from the original series.

 drivers/net/ethernet/cadence/macb_main.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 36717e7e5811..260fdac46f4b 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -5135,6 +5135,17 @@ static const struct macb_config versal_config = {
 	.usrio = &macb_default_usrio,
 };
 
+static const struct macb_config raspberrypi_rp1_config = {
+	.caps = MACB_CAPS_GIGABIT_MODE_AVAILABLE | MACB_CAPS_CLK_HW_CHG |
+		MACB_CAPS_JUMBO |
+		MACB_CAPS_GEM_HAS_PTP,
+	.dma_burst_length = 16,
+	.clk_init = macb_clk_init,
+	.init = macb_init,
+	.usrio = &macb_default_usrio,
+	.jumbo_max_len = 10240,
+};
+
 static const struct of_device_id macb_dt_ids[] = {
 	{ .compatible = "cdns,at91sam9260-macb", .data = &at91sam9260_config },
 	{ .compatible = "cdns,macb" },
@@ -5155,6 +5166,7 @@ static const struct of_device_id macb_dt_ids[] = {
 	{ .compatible = "microchip,mpfs-macb", .data = &mpfs_config },
 	{ .compatible = "microchip,sama7g5-gem", .data = &sama7g5_gem_config },
 	{ .compatible = "microchip,sama7g5-emac", .data = &sama7g5_emac_config },
+	{ .compatible = "raspberrypi,rp1-gem", .data = &raspberrypi_rp1_config },
 	{ .compatible = "xlnx,zynqmp-gem", .data = &zynqmp_config},
 	{ .compatible = "xlnx,zynq-gem", .data = &zynq_config },
 	{ .compatible = "xlnx,versal-gem", .data = &versal_config},
-- 
2.47.0

Re: [PATCH v3] net: cadence: macb: Add support for Raspberry Pi RP1 ethernet controller

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Tue, 16 Sep 2025 11:10:59 +0300 you wrote:
> From: Dave Stevenson <dave.stevenson@raspberrypi.com>
> 
> The RP1 chip has the Cadence GEM block, but wants the tx_clock
> to always run at 125MHz, in the same way as sama7g5.
> Add the relevant configuration.
> 
> Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
> Signed-off-by: Stanimir Varbanov <svarbanov@suse.de>
> Reviewed-by: Andrew Lunn <andrew@lunn.ch>
> Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
> Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
> 
> [...]

Here is the summary with links:
  - [v3] net: cadence: macb: Add support for Raspberry Pi RP1 ethernet controller
    https://git.kernel.org/netdev/net-next/c/dc110d1b2356

You are awesome, thank you!
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