openwrt/target/linux/brcm2708/patches-4.9/950-0153-clk-bcm-Allow-rate-change-propagation-to-PLLH_AUX-on.patch

From 5209e1b8f78fd1184f25cf19cf0daa58f4ad6599 Mon Sep 17 00:00:00 2001
From: Boris Brezillon <boris.brezillon@free-electrons.com>
Date: Thu, 1 Dec 2016 22:00:20 +0100
Subject: [PATCH] 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>
(cherry picked from commit d86d46af84855403c00018be1c3e7bc190f2a6cd)
---
 drivers/clk/bcm/clk-bcm2835.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/clk/bcm/clk-bcm2835.c
+++ b/drivers/clk/bcm/clk-bcm2835.c
@@ -1874,7 +1874,12 @@ static const struct bcm2835_clk_desc clk
 		.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(