linux-kernel - [PATCH] amba: Support clk parents and rates assigned in DT

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Message-Id: <20160711210852.31553-1-sboyd@codeaurora.org>
Date:	Mon, 11 Jul 2016 14:08:52 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Russell King <linux@...linux.org.uk>
Cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-clk@...r.kernel.org,
	Michael Turquette <mturquette@...libre.com>,
	Jorge Ramirez Ortiz <jorge.ramirez-ortiz@...aro.org>
Subject: [PATCH] amba: Support clk parents and rates assigned in DT

Add the call to of_clk_set_defaults() into the amba probe path so
that devices on the amba bus can use the assigned rates and
parents feature of the common clock framework.

Cc: Michael Turquette <mturquette@...libre.com>
Cc: Jorge Ramirez Ortiz <jorge.ramirez-ortiz@...aro.org>
Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
---
 drivers/amba/bus.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c
index a5b5c87e2114..a56fa2a1e9aa 100644
--- a/drivers/amba/bus.c
+++ b/drivers/amba/bus.c
@@ -19,6 +19,7 @@
 #include <linux/amba/bus.h>
 #include <linux/sizes.h>
 #include <linux/limits.h>
+#include <linux/clk/clk-conf.h>
 
 #include <asm/irq.h>
 
@@ -237,6 +238,10 @@ static int amba_probe(struct device *dev)
 	int ret;
 
 	do {
+		ret = of_clk_set_defaults(dev->of_node, false);
+		if (ret < 0)
+			break;
+
 		ret = dev_pm_domain_attach(dev, true);
 		if (ret == -EPROBE_DEFER)
 			break;
-- 
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