diff options
| author | Heiko Stübner <heiko@sntech.de> | 2014-08-15 01:00:26 +0400 |
|---|---|---|
| committer | Mike Turquette <mturquette@linaro.org> | 2014-09-03 02:03:18 +0400 |
| commit | fe94f974e9c8b820640a5873d81589ab67380516 (patch) | |
| tree | ff4719b1c22c714be7734b914e5b264df4c7b768 /drivers/clk/rockchip/clk-rk3188.c | |
| parent | 1a4b1819950a278e44dd2e28c5cdb7d8b804dd73 (diff) | |
| download | linux-fe94f974e9c8b820640a5873d81589ab67380516.tar.xz | |
clk: rockchip: protect critical clocks from getting disabled
The clock-tree contains clocks that should never get disabled automatically.
One example are the base ACLKs, the base supplies for all peripherals.
Therefore add a structure similar to the sunxi clock-tree to protect these
special clocks from being disabled.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Doug Anderson <dianders@chromium.org>
Tested-by: Kever Yang <kever.yang@rock-chips.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'drivers/clk/rockchip/clk-rk3188.c')
| -rw-r--r-- | drivers/clk/rockchip/clk-rk3188.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/clk/rockchip/clk-rk3188.c b/drivers/clk/rockchip/clk-rk3188.c index a83a6d8d0fb6..732118ed55a5 100644 --- a/drivers/clk/rockchip/clk-rk3188.c +++ b/drivers/clk/rockchip/clk-rk3188.c @@ -599,6 +599,11 @@ static struct rockchip_clk_branch rk3188_clk_branches[] __initdata = { GATE(ACLK_GPS, "aclk_gps", "aclk_peri", 0, RK2928_CLKGATE_CON(8), 13, GFLAGS), }; +static const char *rk3188_critical_clocks[] __initconst = { + "aclk_cpu", + "aclk_peri", +}; + static void __init rk3188_common_clk_init(struct device_node *np) { void __iomem *reg_base; @@ -628,6 +633,8 @@ static void __init rk3188_common_clk_init(struct device_node *np) RK3188_GRF_SOC_STATUS); rockchip_clk_register_branches(common_clk_branches, ARRAY_SIZE(common_clk_branches)); + rockchip_clk_protect_critical(rk3188_critical_clocks, + ARRAY_SIZE(rk3188_critical_clocks)); rockchip_register_softrst(np, 9, reg_base + RK2928_SOFTRST_CON(0), ROCKCHIP_SOFTRST_HIWORD_MASK); |