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>
diff --git a/drivers/usb/common/fsl-errata.c b/drivers/usb/common/fsl-errata.c
index 386130d..9eb1d23 100644
--- a/drivers/usb/common/fsl-errata.c
+++ b/drivers/usb/common/fsl-errata.c
@@ -6,6 +6,7 @@
*/
#include <common.h>
+#include <hwconfig.h>
#include <fsl_errata.h>
#include<fsl_usb.h>
#if defined(CONFIG_FSL_LSCH2) || defined(CONFIG_FSL_LSCH3) || \
@@ -44,6 +45,33 @@
return false;
}
+bool has_erratum_a005275(void)
+{
+ u32 svr = get_svr();
+ u32 soc = SVR_SOC_VER(svr);
+
+ if (hwconfig("no_erratum_a005275"))
+ return false;
+
+ switch (soc) {
+#ifdef CONFIG_PPC
+ case SVR_P3041:
+ case SVR_P2041:
+ case SVR_P2040:
+ return IS_SVR_REV(svr, 1, 0) || IS_SVR_REV(svr, 1, 1);
+ case SVR_P5010:
+ case SVR_P5020:
+ case SVR_P5021:
+ return IS_SVR_REV(svr, 1, 0) || IS_SVR_REV(svr, 2, 0);
+ case SVR_P5040:
+ case SVR_P1010:
+ return IS_SVR_REV(svr, 1, 0);
+#endif
+ }
+
+ return false;
+}
+
bool has_erratum_a006261(void)
{
u32 svr = get_svr();