[PATCH 3/5] clk: sun6i: Protect SDRAM gating bit
From: Maxime Ripard <hidden>
Date: 2014-02-24 16:25:12
Also in:
linux-devicetree, lkml
Subsystem:
arm/allwinner soc clock support, common clk framework, the rest · Maintainers:
Emilio López, Michael Turquette, Stephen Boyd, Linus Torvalds
Prevent the SDRAM controller from being gated by force-enabling it in the clock driver. Signed-off-by: Maxime Ripard <redacted> --- drivers/clk/sunxi/clk-sunxi.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c
index 6cfcd23..d9b4a41 100644
--- a/drivers/clk/sunxi/clk-sunxi.c
+++ b/drivers/clk/sunxi/clk-sunxi.c@@ -1302,6 +1302,13 @@ static void __init sunxi_clock_protect(void) clk_put(clk); } + /* DDR Gating clock - sun6i */ + clk = clk_get(NULL, "ahb1_sdram"); + if (!IS_ERR(clk)) { + clk_prepare_enable(clk); + clk_put(clk); + } + /* CPU clocks - sun6i */ clk = clk_get(NULL, "cpu"); if (!IS_ERR(clk)) {
--
1.9.0