commit 4eaf7f525a0874a1eff0f5666004896cc5c89fa3
author Chris Packham <judge.packham@gmail.com> Thu Oct 04 20:03:53 2018 +1300
committer York Sun <york.sun@nxp.com> Mon Oct 29 13:13:05 2018 -0700
tree 551c1b5d786f0f8fc0182361ad98f591c6a71481
parent 454cf76184c65426b68033a23da086e73663f2fc

fsl/usb: Workaround for USB erratum-A005275

Workaround makes FS as default mode on all affected socs.

Add support to check erratum-A005275 validity for an soc. This info is
required to determine whether a given soc is affected by this erratum.
Add quirk for this erratum "has_fsl_erratum_a005275" . This quirk is used
to enable workaround for the errata

Force FS mode as default by:
        - making EPS as FS
        - setting PFSC bit to disable HS chirping

This workaround can be disabled by mentioning "no_erratum_a005275" in
hwconfig string

Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: York Sun <york.sun@nxp.com>

arch/powerpc/cpu/mpc85xx/Kconfig

diff --git a/arch/powerpc/cpu/mpc85xx/Kconfig b/arch/powerpc/cpu/mpc85xx/Kconfig
index 7d139ff..309ca29 100644
--- a/arch/powerpc/cpu/mpc85xx/Kconfig
+++ b/arch/powerpc/cpu/mpc85xx/Kconfig
@@ -659,6 +659,7 @@
 	select SYS_FSL_ERRATUM_A004477
 	select SYS_FSL_ERRATUM_A004508
 	select SYS_FSL_ERRATUM_A005125
+	select SYS_FSL_ERRATUM_A005275
 	select SYS_FSL_ERRATUM_A006261
 	select SYS_FSL_ERRATUM_A007075
 	select SYS_FSL_ERRATUM_ESDHC111
@@ -821,6 +822,7 @@
 	select FSL_LAW
 	select SYS_FSL_ERRATUM_A004510
 	select SYS_FSL_ERRATUM_A004849
+	select SYS_FSL_ERRATUM_A005275
 	select SYS_FSL_ERRATUM_A006261
 	select SYS_FSL_ERRATUM_CPU_A003999
 	select SYS_FSL_ERRATUM_DDR_A003
@@ -845,6 +847,7 @@
 	select SYS_FSL_DDR_VER_44
 	select SYS_FSL_ERRATUM_A004510
 	select SYS_FSL_ERRATUM_A004849
+	select SYS_FSL_ERRATUM_A005275
 	select SYS_FSL_ERRATUM_A005812
 	select SYS_FSL_ERRATUM_A006261
 	select SYS_FSL_ERRATUM_CPU_A003999
@@ -910,6 +913,7 @@
 	select FSL_LAW
 	select SYS_FSL_DDR_VER_44
 	select SYS_FSL_ERRATUM_A004510
+	select SYS_FSL_ERRATUM_A005275
 	select SYS_FSL_ERRATUM_A006261
 	select SYS_FSL_ERRATUM_DDR_A003
 	select SYS_FSL_ERRATUM_DDR_A003474
@@ -935,6 +939,7 @@
 	select SYS_FSL_DDR_VER_44
 	select SYS_FSL_ERRATUM_A004510
 	select SYS_FSL_ERRATUM_A004699
+	select SYS_FSL_ERRATUM_A005275
 	select SYS_FSL_ERRATUM_A005812
 	select SYS_FSL_ERRATUM_A006261
 	select SYS_FSL_ERRATUM_DDR_A003
@@ -1303,6 +1308,9 @@
 config SYS_FSL_ERRATUM_A005871
 	bool
 
+config SYS_FSL_ERRATUM_A005275
+	bool
+
 config SYS_FSL_ERRATUM_A006261
 	bool
 

arch/powerpc/cpu/mpc85xx/cmd_errata.c

diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
index eda2e7e..e455d8b 100644
--- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c
+++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
@@ -307,6 +307,10 @@
 	    (SVR_REV(svr) <= CONFIG_SYS_FSL_A004447_SVR_REV))
 		puts("Work-around for Erratum I2C-A004447 enabled\n");
 #endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_A005275
+	if (has_erratum_a005275())
+		puts("Work-around for Erratum A005275 enabled\n");
+#endif
 #ifdef CONFIG_SYS_FSL_ERRATUM_A006261
 	if (has_erratum_a006261())
 		puts("Work-around for Erratum A006261 enabled\n");