linux-kernel - [PATCH 4.4 182/210] clk: rockchip: add hclk_cpubus to the list of rk3188 critical clocks

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Date:	Sun, 10 Apr 2016 11:36:43 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Alexander Kochetkov <al.kochet@...il.com>,
	Heiko Stuebner <heiko@...ech.de>
Subject: [PATCH 4.4 182/210] clk: rockchip: add hclk_cpubus to the list of rk3188 critical clocks

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alexander Kochetkov <al.kochet@...il.com>

commit e8b63288b37dbb8457b510c9d96f6006da4653f6 upstream.

hclk_cpubus needs to keep running because it is needed for devices like
the rom, i2s0 or spdif to be accessible via cpu. Without that all
accesses to devices (readl/writel) return wrong data. So add it
to the list of critical clocks.

Fixes: 78eaf6095cc763c ("clk: rockchip: disable unused clocks")
Signed-off-by: Alexander Kochetkov <al.kochet@...il.com>
Signed-off-by: Heiko Stuebner <heiko@...ech.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/clk/rockchip/clk-rk3188.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/clk/rockchip/clk-rk3188.c
+++ b/drivers/clk/rockchip/clk-rk3188.c
@@ -718,6 +718,7 @@ static const char *const rk3188_critical
 	"hclk_peri",
 	"pclk_cpu",
 	"pclk_peri",
+	"hclk_cpubus"
 };
 
 static void __init rk3188_common_clk_init(struct device_node *np)