[PATCH v9 17/19] can: rcar_canfd: Add external_clk variable to struct rcar_canfd_hw_info

[Biju Das <biju.das.jz@xxxxxxxxxxxxxx>]

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@xxxxxxxxx>
Reviewed-by: Vincent Mailhol <mailhol.vincent@xxxxxxxxxx>
Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
---
v8->v9:
 * No change.
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 --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);
-- 
2.43.0