clk: bcm: Allow rate change propagation to PLLH_AUX on VEC clock

The VEC clock requires needs to be set at exactly 108MHz. Allow rate
change propagation on PLLH_AUX to match this requirement wihtout
impacting other IPs (PLLH is currently only used by the HDMI encoder,
which cannot be enabled when the VEC encoder is enabled).

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>

diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
index df96fe6dadaba61269059ecffb182027b6043d0f..eaf82f49dedeed5e38ee81f01eef7f1e34554c7c 100644 (file)
--- a/drivers/clk/bcm/clk-bcm2835.c
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -1861,7 +1861,12 @@ static const struct bcm2835_clk_desc clk_desc_array[] = {
                .ctl_reg = CM_VECCTL,
                .div_reg = CM_VECDIV,
                .int_bits = 4,
-               .frac_bits = 0),
+               .frac_bits = 0,
+               /*
+                * Allow rate change propagation only on PLLH_AUX which is
+                * assigned index 7 in the parent array.
+                */
+               .set_rate_parent = BIT(7)),
 
        /* dsi clocks */
        [BCM2835_CLOCK_DSI0E]   = REGISTER_PER_CLK(