linux-kernel - [PATCH] clk: rockchip: rk3288: make aclk_vio1

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Date:   Wed, 11 Jan 2017 09:26:32 +0800
From:   Jacob Chen <jacob-chen@...wrt.com>
To:     heiko@...ech.de, mturquette@...libre.com, sboyd@...eaurora.org
Cc:     linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
        zhangqing@...k-chips.com, zhengxing@...k-chips.com,
        Jacob Chen <jacob-chen@...wrt.com>
Subject: [PATCH] clk: rockchip: rk3288: make aclk_vio1_niu a critical clock

According to the pd blocks, VIO1_NIU is required by RGA,ISP and VOP1.
Then at least one VIO_NIU should be turned on to supply eDP, HDMI, MIPI.

If eDP,HDMI,MIPI is inited early than VOP or RGA is inited early than VOP1,
system will hang.

So make aclk_vio1_niu a critical clock and turn it on at all times.

Signed-off-by: Jacob Chen <jacob-chen@...wrt.com>
---
 drivers/clk/rockchip/clk-rk3288.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/rockchip/clk-rk3288.c b/drivers/clk/rockchip/clk-rk3288.c
index f071c24..59ee244 100644
--- a/drivers/clk/rockchip/clk-rk3288.c
+++ b/drivers/clk/rockchip/clk-rk3288.c
@@ -815,6 +815,7 @@ static struct rockchip_clk_branch rk3288_clk_branches[] __initdata = {
 static const char *const rk3288_critical_clocks[] __initconst = {
 	"aclk_cpu",
 	"aclk_peri",
+	"aclk_vio1_niu",
 	"hclk_peri",
 	"pclk_pd_pmu",
 };
-- 
2.7.4