The ACLK_BUS0/1/2 are used for NoC (Network on Chip). If NoC's clocks are disabled, the system halt happen. Following clock must be always enabled. - CLK_ACLK_BUS0_400 : NoC's bus clock for PERIC/PERIS/FSYS/MSCL - CLK_ACLK_BUS1_400 : NoC's bus clock for MFC/HEVC/G3D - CLK_ACLK_BUS2_400 : NoC's bus clock for GSCL/DISP/G2D/CAM0/CAM1/ISP Also, this patch adds the CLK_SET_RATE_PARENT flag to the CLK_SCLK_JPEG_MSCL because this clock should be used for bus frequency scaling. This clock need to be changed on the fly with CLK_SET_RATE_PARENT flag. Cc: Michael Turquette <mturquette@xxxxxxxxxxxx> Cc: Stephen Boyd <sboyd@xxxxxxxxxxxxxx> Cc:linux-clk@xxxxxxxxxxxxxxx Signed-off-by: Chanwoo Choi <cw00.choi@xxxxxxxxxxx> --- drivers/clk/samsung/clk-exynos5433.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/clk/samsung/clk-exynos5433.c b/drivers/clk/samsung/clk-exynos5433.c index f096bd7df40c..0db5204c307c 100644 --- a/drivers/clk/samsung/clk-exynos5433.c +++ b/drivers/clk/samsung/clk-exynos5433.c @@ -549,10 +549,10 @@ 29, CLK_IGNORE_UNUSED, 0), GATE(CLK_ACLK_BUS0_400, "aclk_bus0_400", "div_aclk_bus0_400", ENABLE_ACLK_TOP, 26, - CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0), + CLK_IS_CRITICAL | CLK_SET_RATE_PARENT, 0), GATE(CLK_ACLK_BUS1_400, "aclk_bus1_400", "div_aclk_bus1_400", ENABLE_ACLK_TOP, 25, - CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0), + CLK_IS_CRITICAL | CLK_SET_RATE_PARENT, 0), GATE(CLK_ACLK_IMEM_200, "aclk_imem_200", "div_aclk_imem_266", ENABLE_ACLK_TOP, 24, CLK_IS_CRITICAL | CLK_SET_RATE_PARENT, 0), @@ -616,7 +616,7 @@ /* ENABLE_SCLK_TOP_MSCL */ GATE(CLK_SCLK_JPEG_MSCL, "sclk_jpeg_mscl", "div_sclk_jpeg", - ENABLE_SCLK_TOP_MSCL, 0, 0, 0), + ENABLE_SCLK_TOP_MSCL, 0, CLK_SET_RATE_PARENT, 0), /* ENABLE_SCLK_TOP_CAM1 */ GATE(CLK_SCLK_ISP_SENSOR2, "sclk_isp_sensor2", "div_sclk_isp_sensor2_b", @@ -1382,7 +1382,7 @@ static void __init exynos5433_cmu_cpif_init(struct device_node *np) /* ENABLE_ACLK_MIF3 */ GATE(CLK_ACLK_BUS2_400, "aclk_bus2_400", "div_aclk_bus2_400", ENABLE_ACLK_MIF3, 4, - CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0), + CLK_IS_CRITICAL | CLK_SET_RATE_PARENT, 0), GATE(CLK_ACLK_DISP_333, "aclk_disp_333", "div_aclk_disp_333", ENABLE_ACLK_MIF3, 1, CLK_IS_CRITICAL | CLK_SET_RATE_PARENT, 0), -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
