[PATCH net-next 17/22] can: rcar_canfd: Add external_clk variable to struct rcar_canfd_hw_info
From: Marc Kleine-Budde <mkl@pengutronix.de>
Date: 2025-05-22 08:41:45
Also in:
linux-can
Subsystem:
can network drivers, the rest · Maintainers:
Marc Kleine-Budde, Vincent Mailhol, Linus Torvalds
From: Biju Das <biju.das.jz@bp.renesas.com> All existing SoCs support an external clock, but RZ/G3E has only internal clocks. Add external_clk variable to struct rcar_canfd_hw_info to handle this difference. Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Vincent Mailhol <redacted> Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://patch.msgid.link/20250417054320.14100-18-biju.das.jz@bp.renesas.com Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> --- drivers/net/can/rcar/rcar_canfd.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c
index 67f7b5f6376c..0bf0e88dfe25 100644
--- a/drivers/net/can/rcar/rcar_canfd.c
+++ b/drivers/net/can/rcar/rcar_canfd.c@@ -541,6 +541,7 @@ struct rcar_canfd_hw_info { unsigned multi_channel_irqs:1; /* Has multiple channel irqs */ unsigned ch_interface_mode:1; /* Has channel interface mode */ unsigned shared_can_regs:1; /* Has shared classical can registers */ + unsigned external_clk:1; /* Has external clock */ }; /* Channel priv data */
@@ -690,6 +691,7 @@ static const struct rcar_canfd_hw_info rcar_gen3_hw_info = { .shared_global_irqs = 1, .ch_interface_mode = 0, .shared_can_regs = 0, + .external_clk = 1, }; static const struct rcar_canfd_hw_info rcar_gen4_hw_info = {
@@ -705,6 +707,7 @@ static const struct rcar_canfd_hw_info rcar_gen4_hw_info = { .shared_global_irqs = 1, .ch_interface_mode = 1, .shared_can_regs = 1, + .external_clk = 1, }; static const struct rcar_canfd_hw_info rzg2l_hw_info = {
@@ -720,6 +723,7 @@ static const struct rcar_canfd_hw_info rzg2l_hw_info = { .multi_channel_irqs = 1, .ch_interface_mode = 0, .shared_can_regs = 0, + .external_clk = 1, }; /* Helper functions */
@@ -2048,7 +2052,7 @@ static int rcar_canfd_probe(struct platform_device *pdev) fcan_freq = clk_get_rate(gpriv->can_clk) / info->postdiv; } else { fcan_freq = clk_get_rate(gpriv->can_clk); - gpriv->extclk = true; + gpriv->extclk = gpriv->info->external_clk; } addr = devm_platform_ioremap_resource(pdev, 0);
--
2.47.2