diff mbox series

[v8,17/19] can: rcar_canfd: Add external_clk variable to struct rcar_canfd_hw_info

Message ID 20250402102226.28032-18-biju.das.jz@bp.renesas.com (mailing list archive)
State New
Delegated to: Geert Uytterhoeven
Headers show
Series Add support for RZ/G3E CANFD | expand

Commit Message

Biju Das April 2, 2025, 10:22 a.m. UTC 
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 <mailhol.vincent@wanadoo.fr>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
v7->v8:
 * Renamed only_internal_clks->external_clk to avoid negation.
 * Updated commit description.
 * Updated rcar_canfd_hw_info tables.
 * Collected tag.
v6->v7:
 * No change.
v5->v6:
 * No change.
v4->v5:
 * Collected tag.
 * Improved commit description by "All SoCs supports extenal clock"->
   "All existing SoCs support an external clock".
v3->v4:
 * No change.
v2->v3:
 * No change
v1->v2:
 * No change.
---
 drivers/net/can/rcar/rcar_canfd.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c
index 5c46bc0e352f..11dd3730e98c 100644
--- a/drivers/net/can/rcar/rcar_canfd.c
+++ b/drivers/net/can/rcar/rcar_canfd.c
@@ -540,6 +540,7 @@  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 */
@@ -689,6 +690,7 @@  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 = {
@@ -704,6 +706,7 @@  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 = {
@@ -719,6 +722,7 @@  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 */
@@ -2047,7 +2051,7 @@  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);