Hi Sean,
-----Original Message----- From: Sean Anderson sean.anderson@seco.com Sent: Wednesday, April 20, 2022 3:32 AM To: u-boot@lists.denx.de; Priyanka Jain priyanka.jain@nxp.com Cc: Yinbo Zhu yinbo.zhu@nxp.com; Ran Wang ran.wang_1@nxp.com; Prabhakar Kushwaha prabhakar.kushwaha@nxp.com; Tom Rini trini@konsulko.com Subject: Re: [PATCH 2/2] arm: layerscape: Disable erratum A009007 on LS1021A, LS1043A, and LS1046A
On 2/22/22 1:38 PM, Sean Anderson wrote:
This erratum is reported to cause problems on these processors [1-3]. The problem is usually with the clocking, which is supposed to be configured by the RCW [4]. However, if it is not set, or if the default clocking is not correct, then this erratum will cause an SError. However, according to Ran Wang in [1]:
... this erratum is used to pass USB compliance test only, you could disable this workaround on your board if you don't any USB issue on normal use case, I think it's fine.
So just disable this erratum by default for these processors.
[1] https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Flore .kernel.org%2Fall%2F761ddd61-05c1-d9b8-ac90-b8f425afde6c%40denx.de%2F& amp;data=05%7C01%7Cran.wang_1%40nxp.com%7C3a19547d54eb46a572cc08da223b 3cff%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C637859935071826709%7 CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1 haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=0QLVw7ZIW9SYBrTqtCIfFClz eA63jn72oAMlw18Y6FA%3D&reserved=0 [2] https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcomm unity.nxp.com%2Ft5%2FLayerscape%2FLS1046A-U-BOOT-HALT-AT-ERRATUM-A0090 078%2Fm-p%2F742993&data=05%7C01%7Cran.wang_1%40nxp.com%7C3a19547d5 4eb46a572cc08da223b3cff%7C686ea1d3bc2b4c6fa92cd99c5c301635%7C0%7C0%7C6 37859935071826709%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoi V2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=dTV6k AUn%2BqNDzdXEoEb0EwJEzqbTcFBVFeFpy3XbcnM%3D&reserved=0 [3] https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcomm unity.nxp.com%2Ft5%2FQorIQ%2FWhy-does-the-LS1043A-U-Boot-hang-at-code- that-fixes-erratum%2Fm-p%2F644412&data=05%7C01%7Cran.wang_1%40nxp. com%7C3a19547d54eb46a572cc08da223b3cff%7C686ea1d3bc2b4c6fa92cd99c5c301 635%7C0%7C0%7C637859935071826709%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wL jAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C& amp;sdata=5xJd%2BrKCd8b%2Ft8AovVisDuLAsg%2B7aJz%2FA4wZp7echB0%3D&r eserved=0 [4] https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsour ce.codeaurora.org%2Fexternal%2Fqoriq%2Fqoriq-components%2Frcw%2Ftree%2 Fls1046ardb%2Fusb_phy_freq.rcw&data=05%7C01%7Cran.wang_1%40nxp.com %7C3a19547d54eb46a572cc08da223b3cff%7C686ea1d3bc2b4c6fa92cd99c5c301635 %7C0%7C0%7C637859935071826709%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAw MDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C& ;sdata=I9mZiTLAofR7%2F0aWsLvOGoI%2B9xEDhPmRJADbBOZiwwU%3D&reserved =0
Signed-off-by: Sean Anderson sean.anderson@seco.com
Acked-by: Ran Wang ran.wang_1@nxp.com
arch/arm/cpu/armv7/ls102xa/Kconfig | 1 - arch/arm/cpu/armv8/fsl-layerscape/Kconfig | 2 -- 2 files changed, 3 deletions(-)
diff --git a/arch/arm/cpu/armv7/ls102xa/Kconfig b/arch/arm/cpu/armv7/ls102xa/Kconfig index 6a948d7ba7..cec93a27db 100644 --- a/arch/arm/cpu/armv7/ls102xa/Kconfig +++ b/arch/arm/cpu/armv7/ls102xa/Kconfig @@ -7,7 +7,6 @@ config ARCH_LS1021A select SYS_FSL_ERRATUM_A008407 select SYS_FSL_ERRATUM_A008850 select SYS_FSL_ERRATUM_A008997 if USB
- select SYS_FSL_ERRATUM_A009007 if USB select SYS_FSL_ERRATUM_A009008 if USB select SYS_FSL_ERRATUM_A009663 select SYS_FSL_ERRATUM_A009798 if USB diff --git
a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig index 9bb870dcd8..f5a18053e6 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig +++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig @@ -74,7 +74,6 @@ config ARCH_LS1043A select SYS_FSL_DDR_VER_50 select SYS_FSL_ERRATUM_A008850 if !TFABOOT select SYS_FSL_ERRATUM_A008997
- select SYS_FSL_ERRATUM_A009007 select SYS_FSL_ERRATUM_A009008 select SYS_FSL_ERRATUM_A009660 if !TFABOOT select SYS_FSL_ERRATUM_A009663 if !TFABOOT @@ -112,7 +111,6 @@
config ARCH_LS1046A select SYS_FSL_ERRATUM_A008511 if !TFABOOT select SYS_FSL_ERRATUM_A008850 if !TFABOOT select SYS_FSL_ERRATUM_A008997
- select SYS_FSL_ERRATUM_A009007 select SYS_FSL_ERRATUM_A009008 select SYS_FSL_ERRATUM_A009798 select SYS_FSL_ERRATUM_A009801
ping? Can someone from NXP comment on this (either for or against)?
I am not longer take USB ownership for Layerscape platforms. Please also include my colleague Jun for any further review.
Thanks & Regards, Ran