Commit be53aa05 authored by Biju Das's avatar Biju Das Committed by Marc Kleine-Budde
Browse files

can: rcar_canfd: Add RZ/G3E support 



The CAN-FD IP found on the RZ/G3E SoC is similar to R-Car Gen4, but
it has no external clock instead it has clk_ram, it has 6 channels
and supports 20 interrupts. Add support for RZ/G3E CAN-FD driver.

Reviewed-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: default avatarVincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: default avatarBiju Das <biju.das.jz@bp.renesas.com>
Link: https://patch.msgid.link/20250417054320.14100-20-biju.das.jz@bp.renesas.com


Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent 0853b7e4

drivers/net/can/rcar/rcar_canfd.c

+23 −0
Original line number Diff line number Diff line
@@ -726,6 +726,22 @@ static const struct rcar_canfd_hw_info rzg2l_hw_info = { 
	.external_clk = 1,

};



static const struct rcar_canfd_hw_info r9a09g047_hw_info = {

	.nom_bittiming = &rcar_canfd_gen4_nom_bittiming_const,

	.data_bittiming = &rcar_canfd_gen4_data_bittiming_const,

	.regs = &rcar_gen4_regs,

	.sh = &rcar_gen4_shift_data,

	.rnc_field_width = 16,

	.max_aflpn = 63,

	.max_cftml = 31,

	.max_channels = 6,

	.postdiv = 1,

	.multi_channel_irqs = 1,

	.ch_interface_mode = 1,

	.shared_can_regs = 1,

	.external_clk = 0,

};



/* Helper functions */

static inline void rcar_canfd_update(u32 mask, u32 val, u32 __iomem *reg)

{
@@ -1969,6 +1985,7 @@ static int rcar_canfd_probe(struct platform_device *pdev) 
	u32 rule_entry = 0;

	bool fdmode = true;			/* CAN FD only mode - default */

	char name[9] = "channelX";

	struct clk *clk_ram;

	int i;



	info = of_device_get_match_data(dev);
@@ -2058,6 +2075,11 @@ static int rcar_canfd_probe(struct platform_device *pdev) 
		gpriv->extclk = gpriv->info->external_clk;

	}



	clk_ram = devm_clk_get_optional_enabled(dev, "ram_clk");

	if (IS_ERR(clk_ram))

		return dev_err_probe(dev, PTR_ERR(clk_ram),

				     "cannot get enabled ram clock\n");



	addr = devm_platform_ioremap_resource(pdev, 0);

	if (IS_ERR(addr)) {

		err = PTR_ERR(addr);
@@ -2220,6 +2242,7 @@ static SIMPLE_DEV_PM_OPS(rcar_canfd_pm_ops, rcar_canfd_suspend, 


static const __maybe_unused struct of_device_id rcar_canfd_of_table[] = {

	{ .compatible = "renesas,r8a779a0-canfd", .data = &rcar_gen4_hw_info },

	{ .compatible = "renesas,r9a09g047-canfd", .data = &r9a09g047_hw_info },

	{ .compatible = "renesas,rcar-gen3-canfd", .data = &rcar_gen3_hw_info },

	{ .compatible = "renesas,rcar-gen4-canfd", .data = &rcar_gen4_hw_info },

	{ .compatible = "renesas,rzg2l-canfd", .data = &rzg2l_hw_info },