drivers:usb: Add device-tree fixup to identify socs having dual phy

Identify soc(s) having dual phy so as to add "utmi_dual" as phy_mode for all these socs. This is required for supporting deel-sleep feature in linux for usb driver Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com> Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>

drivers:usb: Add device-tree fixup to identify socs having dual phy
Identify soc(s) having dual phy so as to add "utmi_dual" as phy_mode for all these socs. This is required for supporting deel-sleep feature in linux for usb driver Signed-off-by: Ramneek Mehresh <ramneek.mehresh@freescale.com> Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com> Reviewed-by: York Sun <yorksun@freescale.com>
Nikhil Badola · York Sun
1 parent 98cb0efde8
Showing 2 changed files with 38 additions and 1 deletions Side-by-side Diff
drivers/usb/host/ehci-fsl.c
include/fsl_usb.h
@@ -259,7 +259,7 @@
 void fdt_fixup_dr_usb(void *blob, bd_t *bd)
 {
 	static const char * const modes[] = { "host", "peripheral", "otg" };
-	static const char * const phys[] = { "ulpi", "utmi" };
+	static const char * const phys[] = { "ulpi", "utmi", "utmi_dual" };
 	int usb_erratum_a006261_off = -1;
 	int usb_erratum_a007075_off = -1;
 	int usb_erratum_a007792_off = -1;
@@ -303,6 +303,9 @@
 				dr_phy_type = phys[phy_idx];
 		}
  
+		if (has_dual_phy())
+			dr_phy_type = phys[2];
+
 		usb_mode_off = fdt_fixup_usb_mode_phy_type(blob,
 							   dr_mode_type, NULL,
 							   usb_mode_off);
@@ -325,6 +328,7 @@
 			if (usb_erratum_a006261_off < 0)
 				return;
 		}
+
 		if (has_erratum_a007075()) {
 			usb_erratum_a007075_off =  fdt_fixup_usb_erratum
 						   (blob,
@@ -333,6 +337,7 @@
 			if (usb_erratum_a007075_off < 0)
 				return;
 		}
+
 		if (has_erratum_a007792()) {
 			usb_erratum_a007792_off =  fdt_fixup_usb_erratum
 						   (blob,
@@ -87,6 +87,33 @@
  
 /* USB Erratum Checking code */
 #ifdef CONFIG_PPC
+static inline bool has_dual_phy(void)
+{
+	u32 svr = get_svr();
+	u32 soc = SVR_SOC_VER(svr);
+
+	switch (soc) {
+	case SVR_T1023:
+	case SVR_T1024:
+	case SVR_T1013:
+	case SVR_T1014:
+		return IS_SVR_REV(svr, 1, 0);
+	case SVR_T1040:
+	case SVR_T1042:
+	case SVR_T1020:
+	case SVR_T1022:
+	case SVR_T2080:
+	case SVR_T2081:
+		return IS_SVR_REV(svr, 1, 0) || IS_SVR_REV(svr, 1, 1);
+	case SVR_T4240:
+	case SVR_T4160:
+	case SVR_T4080:
+		return IS_SVR_REV(svr, 1, 0) || IS_SVR_REV(svr, 2, 0);
+	}
+
+	return false;
+}
+
 static inline bool has_erratum_a006261(void)
 {
 	u32 svr = get_svr();
@@ -165,6 +192,11 @@
 }
  
 #else
+static inline bool has_dual_phy(void)
+{
+	return false;
+}
+
 static inline bool has_erratum_a006261(void)
 {
 	return false;
...	...	@@ -259,7 +259,7 @@
259	259	void fdt_fixup_dr_usb(void blob, bd_t bd)
260	260	{
261	261	static const char * const modes[] = { "host", "peripheral", "otg" };
262		- static const char * const phys[] = { "ulpi", "utmi" };
	262	+ static const char * const phys[] = { "ulpi", "utmi", "utmi_dual" };
263	263	int usb_erratum_a006261_off = -1;
264	264	int usb_erratum_a007075_off = -1;
265	265	int usb_erratum_a007792_off = -1;
...	...	@@ -303,6 +303,9 @@
303	303	dr_phy_type = phys[phy_idx];
304	304	}
305	305
	306	+ if (has_dual_phy())
	307	+ dr_phy_type = phys[2];
	308	+
306	309	usb_mode_off = fdt_fixup_usb_mode_phy_type(blob,
307	310	dr_mode_type, NULL,
308	311	usb_mode_off);
...	...	@@ -325,6 +328,7 @@
325	328	if (usb_erratum_a006261_off < 0)
326	329	return;
327	330	}
	331	+
328	332	if (has_erratum_a007075()) {
329	333	usb_erratum_a007075_off = fdt_fixup_usb_erratum
330	334	(blob,
...	...	@@ -333,6 +337,7 @@
333	337	if (usb_erratum_a007075_off < 0)
334	338	return;
335	339	}
	340	+
336	341	if (has_erratum_a007792()) {
337	342	usb_erratum_a007792_off = fdt_fixup_usb_erratum
338	343	(blob,
...	...	@@ -87,6 +87,33 @@
87	87
88	88	/* USB Erratum Checking code */
89	89	#ifdef CONFIG_PPC
	90	+static inline bool has_dual_phy(void)
	91	+{
	92	+ u32 svr = get_svr();
	93	+ u32 soc = SVR_SOC_VER(svr);
	94	+
	95	+ switch (soc) {
	96	+ case SVR_T1023:
	97	+ case SVR_T1024:
	98	+ case SVR_T1013:
	99	+ case SVR_T1014:
	100	+ return IS_SVR_REV(svr, 1, 0);
	101	+ case SVR_T1040:
	102	+ case SVR_T1042:
	103	+ case SVR_T1020:
	104	+ case SVR_T1022:
	105	+ case SVR_T2080:
	106	+ case SVR_T2081:
	107	+ return IS_SVR_REV(svr, 1, 0) \|\| IS_SVR_REV(svr, 1, 1);
	108	+ case SVR_T4240:
	109	+ case SVR_T4160:
	110	+ case SVR_T4080:
	111	+ return IS_SVR_REV(svr, 1, 0) \|\| IS_SVR_REV(svr, 2, 0);
	112	+ }
	113	+
	114	+ return false;
	115	+}
	116	+
90	117	static inline bool has_erratum_a006261(void)
91	118	{
92	119	u32 svr = get_svr();
...	...	@@ -165,6 +192,11 @@
165	192	}
166	193
167	194	#else
	195	+static inline bool has_dual_phy(void)
	196	+{
	197	+ return false;
	198	+}
	199	+
168	200	static inline bool has_erratum_a006261(void)
169	201	{
170	202	return false;