On 18.02.2025 10:49:59, Biju Das wrote: > 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. > > Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx> > --- > drivers/net/can/rcar/rcar_canfd.c | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) > > diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c > index d6d7ba3e9ca1..69ccd69f68dd 100644 > --- a/drivers/net/can/rcar/rcar_canfd.c > +++ b/drivers/net/can/rcar/rcar_canfd.c > @@ -607,6 +607,14 @@ static const struct rcar_canfd_hw_info rzg2l_hw_info = { > .multi_channel_irqs = 1, > }; > > +static const struct rcar_canfd_hw_info r9a09g047_hw_info = { > + .max_channels = 6, > + .postdiv = 1, > + .multi_channel_irqs = 1, > + .gen4_type = 1, > + .only_internal_clks = 1, > +}; > + > /* Helper functions */ > static inline bool is_gen4(struct rcar_canfd_global *gpriv) > { > @@ -1861,6 +1869,7 @@ 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); > @@ -1950,6 +1959,11 @@ static int rcar_canfd_probe(struct platform_device *pdev) > gpriv->extclk = !gpriv->info->only_internal_clks; > } > > + clk_ram = devm_clk_get_optional_enabled(dev, "ram_clk"); This will keep the clock enabled, even if the interface is down. Do you care for a more fine grained clock handling? > + if (IS_ERR(clk_ram)) > + return dev_err_probe(dev, PTR_ERR(clk_ram), > + "cannot get ram clock\n"); > + > addr = devm_platform_ioremap_resource(pdev, 0); > if (IS_ERR(addr)) { > err = PTR_ERR(addr); > @@ -2112,6 +2126,7 @@ 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 }, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Embedded Linux | https://www.pengutronix.de | Vertretung Nürnberg | Phone: +49-5121-206917-129 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-9 |
Attachment:
signature.asc
Description: PGP signature