clk: renesas: Handle CLK_TYPE_GEN4_MDSEL in gen3_clk_get_rate64()

Add support of CLK_TYPE_GEN4_MDSEL clock type to gen3_clk_get_rate64()
function. In particular, this type of clock is used by Renesas R-Car
Gen4 watchdog. It operates similarly to CLK_TYPE_GEN3_MDSEL clock.

Signed-off-by: Shmuel Leib Melamud <smelamud@redhat.com>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@kernel.org>
Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Stefan Roese <sr@denx.de>

diff --git a/drivers/clk/renesas/clk-rcar-gen3.c b/drivers/clk/renesas/clk-rcar-gen3.c
index 375cc4a4930873ad0d5509c19ad04a0ea5545aa0..5745acf4023c9114f6fa13b5e4baa306c5b57d33 100644 (file)
--- a/drivers/clk/renesas/clk-rcar-gen3.c
+++ b/drivers/clk/renesas/clk-rcar-gen3.c
@@ -68,7 +68,7 @@ static int gen3_clk_get_parent(struct gen3_clk_priv *priv, struct clk *clk,
                if (ret)
                        return ret;
 
-               if (core->type == CLK_TYPE_GEN3_MDSEL) {
+               if (core->type == CLK_TYPE_GEN3_MDSEL || core->type == CLK_TYPE_GEN4_MDSEL) {
                        shift = priv->cpg_mode & BIT(core->offset) ? 0 : 16;
                        parent->dev = clk->dev;
                        parent->id = core->parent >> shift;
@@ -318,6 +318,8 @@ static u64 gen3_clk_get_rate64(struct clk *clk)
                                                "FIXED");
 
        case CLK_TYPE_GEN3_MDSEL:
+               fallthrough;
+       case CLK_TYPE_GEN4_MDSEL:
                shift = priv->cpg_mode & BIT(core->offset) ? 0 : 16;
                div = (core->div >> shift) & 0xffff;
                rate = gen3_clk_get_rate64(&parent) / div;