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");
+ 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 },
--
2.43.0
