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authorFabio Estevam <fabio.estevam@freescale.com>2014-12-16 17:30:28 -0200
committerShawn Guo <shawn.guo@linaro.org>2015-01-05 21:16:31 +0800
commit7c168ed898931f6c3314d696e63cf993378ca192 (patch)
tree702d5d69b5e99bc4f29e10e2932266b150248ca3
parent7a87e9cbc3a2f0ff0955815335e08c9862359130 (diff)
downloadop-kernel-dev-7c168ed898931f6c3314d696e63cf993378ca192.zip
op-kernel-dev-7c168ed898931f6c3314d696e63cf993378ca192.tar.gz
ARM: imx6sx: Set PLL2 as parent of QSPI clocks
The default qspi2_clk_sel field of register CCM_CS2CDR contains '110' which is marked as 'reserved', so we can't rely on the default value. Provide a proper parent for QSPI clocks to avoid a kernel oops: [ 1.037920] Division by zero in kernel. [ 1.041807] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.18.0-rc7-next-20141204-00002-g5aa23e1 #2143 [ 1.050967] Hardware name: Freescale i.MX6 SoloX (Device Tree) [ 1.056853] Backtrace: [ 1.059360] [<80011ea0>] (dump_backtrace) from [<8001203c>] (show_stack+0x18/0x1c) [ 1.066982] r6:00000000 r5:00000000 r4:00000000 r3:00000000 [ 1.072754] [<80012024>] (show_stack) from [<806b7100>] (dump_stack+0x88/0xa4) [ 1.080038] [<806b7078>] (dump_stack) from [<80011d20>] (__div0+0x18/0x20) [ 1.086958] r5:be018500 r4:be017c00 [ 1.090600] [<80011d08>] (__div0) from [<802aa418>] (Ldiv0+0x8/0x10) [ 1.097012] [<80504fbc>] (clk_divider_set_rate) from [<80503ddc>] (clk_change_rate+0x14c/0x17c) [ 1.105759] r7:00000000 r6:00000000 r5:be018500 r4:00000000 [ 1.111516] [<80503c90>] (clk_change_rate) from [<80503ea0>] (clk_set_rate+0x94/0x98) [ 1.119391] r8:be7e0368 r7:00000000 r6:be11a000 r5:be018500 r4:00000000 r3:00000000 [ 1.127290] [<80503e0c>] (clk_set_rate) from [<80410558>] (fsl_qspi_probe+0x23c/0x75c) [ 1.135260] r5:be11a010 r4:be350010 [ 1.138900] [<8041031c>] (fsl_qspi_probe) from [<80385a18>] (platform_drv_probe+0x50/0xac) Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Cc: <stable@vger.kernel.org> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
-rw-r--r--arch/arm/mach-imx/clk-imx6sx.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/clk-imx6sx.c b/arch/arm/mach-imx/clk-imx6sx.c
index 17354a1..5a3e5a1 100644
--- a/arch/arm/mach-imx/clk-imx6sx.c
+++ b/arch/arm/mach-imx/clk-imx6sx.c
@@ -558,6 +558,9 @@ static void __init imx6sx_clocks_init(struct device_node *ccm_node)
clk_set_parent(clks[IMX6SX_CLK_GPU_CORE_SEL], clks[IMX6SX_CLK_PLL3_PFD0]);
clk_set_parent(clks[IMX6SX_CLK_GPU_AXI_SEL], clks[IMX6SX_CLK_PLL3_PFD0]);
+ clk_set_parent(clks[IMX6SX_CLK_QSPI1_SEL], clks[IMX6SX_CLK_PLL2_BUS]);
+ clk_set_parent(clks[IMX6SX_CLK_QSPI2_SEL], clks[IMX6SX_CLK_PLL2_BUS]);
+
/* Set initial power mode */
imx6q_set_lpm(WAIT_CLOCKED);
}
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