[PATCH 2/2] arm: layerscape: Disable erratum A009007 on LS1021A, LS1043A, and LS1046A

[Sean Anderson]

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://lore.kernel.org/all/761ddd61-05c1-d9b8-ac90-b8f425afde6c@denx.de/
[2] https://community.nxp.com/t5/Layerscape/LS1046A-U-BOOT-HALT-AT-ERRATUM-A0090078/m-p/742993
[3] https://community.nxp.com/t5/QorIQ/Why-does-the-LS1043A-U-Boot-hang-at-code-that-fixes-erratum/m-p/644412
[4] https://source.codeaurora.org/external/qoriq/qoriq-components/rcw/tree/ls1046ardb/usb_phy_freq.rcw

Signed-off-by: Sean Anderson <sean.anderson at seco.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
-- 
2.25.1