bcm4908: backport brcmstb USB PHY driver changes

This includes BCM4908 support

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 50 insertions, 0 deletions

diff --git a/target/linux/bcm4908/patches-5.4/180-soc-brcmstb-add-stubs-for-getting-platform-IDs.patch b/target/linux/bcm4908/patches-5.4/180-soc-brcmstb-add-stubs-for-getting-platform-IDs.patch
new file mode 100644
index 0000000000..366e6089c4
--- /dev/null
+++ b/target/linux/bcm4908/patches-5.4/180-soc-brcmstb-add-stubs-for-getting-platform-IDs.patch
@@ -0,0 +1,50 @@
+From c149974b2ae2e2296c66262a4ee797c06c39982b Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Thu, 14 Jan 2021 11:33:01 +0100
+Subject: [PATCH] soc: brcmstb: add stubs for getting platform IDs
+
+Some brcmstb drivers may be shared with other SoC families. E.g. the
+same USB PHY block is shared by brcmstb and BCM4908.
+
+To avoid building brcmstb common code on non-brcmstb platforms we need
+stubs for:
+1. brcmstb_get_family_id()
+2. brcmstb_get_product_id()
+(to avoid "undefined reference to" errors).
+
+With this change PHY_BRCM_USB will not have to unconditionally select
+SOC_BRCMSTB anymore.
+---
+ include/linux/soc/brcmstb/brcmstb.h | 16 ++++++++++++++++
+ 1 file changed, 16 insertions(+)
+
+--- a/include/linux/soc/brcmstb/brcmstb.h
++++ b/include/linux/soc/brcmstb/brcmstb.h
+@@ -12,6 +12,8 @@ static inline u32 BRCM_REV(u32 reg)
+ 	return reg & 0xff;
+ }
+ 
++#ifdef CONFIG_SOC_BRCMSTB
++
+ /*
+  * Helper functions for getting family or product id from the
+  * SoC driver.
+@@ -19,4 +21,18 @@ static inline u32 BRCM_REV(u32 reg)
+ u32 brcmstb_get_family_id(void);
+ u32 brcmstb_get_product_id(void);
+ 
++#else
++
++static inline u32 brcmstb_get_family_id(void)
++{
++	return 0;
++}
++
++static inline u32 brcmstb_get_product_id(void)
++{
++	return 0;
++}
++
++#endif
++
+ #endif /* __BRCMSTB_SOC_H */