From be53aa052008538d67d9ad23f6f8160df390e1d6 Mon Sep 17 00:00:00 2001 From: Biju Das Date: Thu, 17 Apr 2025 06:43:20 +0100 Subject: [PATCH] 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: Geert Uytterhoeven Reviewed-by: Vincent Mailhol Signed-off-by: Biju Das Link: https://patch.msgid.link/20250417054320.14100-20-biju.das.jz@bp.renesas.com Signed-off-by: Marc Kleine-Budde --- drivers/net/can/rcar/rcar_canfd.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c index 6a9c970364cb0..27d503ac87dcd 100644 --- a/drivers/net/can/rcar/rcar_canfd.c +++ b/drivers/net/can/rcar/rcar_canfd.c @@ -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 }, -- 2.47.2