[U-Boot] 答复: [PATCH] armv8/fsl-layerscape: fdt: On ls1012 don't check sysclk for USB

[Yingxi Yu]

Hi York:

Currenly LS1012A is the only case. If there is other platform apply it in 
the future, we can add other platform later.


Best Regards

Yingxi Yu


发件人: york sun
发送时间: 2017年3月27日 8:29:02
收件人: Yingxi Yu; u-boot@lists.denx.de
主题: Re: [PATCH] armv8/fsl-layerscape: fdt: On ls1012 don't check sysclk for USB

On 03/16/2017 12:32 AM, Yingxi Yu wrote:
> USB requires 100MHz clock. On ls1012, sysclk(125MHz) is not for USB.
> Another 100MHz clock is for USB. So For USB, check if sysclk is 100MHz
> is failed on ls1012, sysclk is not for USB. Don't check sysclk for
> USB on ls1012.

Does this only apply to LS1012A? Or does this apply a group of SoCs?

York

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[U-Boot] [PATCH] armv8/fsl-layerscape: fdt: On ls1012 don't check sysclk for USB

[Yingxi Yu]

USB requires 100MHz clock. On ls1012, sysclk(125MHz) is not for USB.
Another 100MHz clock is for USB. So For USB, check if sysclk is 100MHz
is failed on ls1012, sysclk is not for USB. Don't check sysclk for
USB on ls1012.

Signed-off-by: Yingxi Yu <yingxi...@nxp.com>
---
 arch/arm/cpu/armv8/fsl-layerscape/fdt.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c 
b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
index 26d4a30..762a95b 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/fdt.c
@@ -387,8 +387,9 @@ void ft_cpu_setup(void *blob, bd_t *bd)
 #ifdef CONFIG_SYS_DPAA_FMAN
fdt_fixup_fman_firmware(blob);
 #endif
+#ifndef CONFIG_LS1012A
fsl_fdt_disable_usb(blob);
-
+#endif
 #ifdef CONFIG_HAS_FEATURE_GIC64K_ALIGN
fdt_fixup_gic(blob);
 #endif
-- 
2.1.0.27.g96db324

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