arm: rpi: Add function to trigger VL805's firmware load
On the Raspberry Pi 4, after a PCI reset, VL805's (a xHCI chip) firmware
may either be loaded directly from an EEPROM or, if not present, by the
SoC's VideCore (the SoC's co-processor). Introduce the function that
informs VideCore that VL805 may need its firmware loaded.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
diff --git a/arch/arm/mach-bcm283x/include/mach/mbox.h b/arch/arm/mach-bcm283x/include/mach/mbox.h
index 60e226c..2ae2d3d 100644
--- a/arch/arm/mach-bcm283x/include/mach/mbox.h
+++ b/arch/arm/mach-bcm283x/include/mach/mbox.h
@@ -491,6 +491,19 @@
} body;
};
+#define BCM2835_MBOX_TAG_NOTIFY_XHCI_RESET 0x00030058
+
+struct bcm2835_mbox_tag_pci_dev_addr {
+ struct bcm2835_mbox_tag_hdr tag_hdr;
+ union {
+ struct {
+ u32 dev_addr;
+ } req;
+ struct {
+ } resp;
+ } body;
+};
+
/*
* Pass a raw u32 message to the VC, and receive a raw u32 back.
*
diff --git a/arch/arm/mach-bcm283x/include/mach/msg.h b/arch/arm/mach-bcm283x/include/mach/msg.h
index 4afb086..e45c1bf 100644
--- a/arch/arm/mach-bcm283x/include/mach/msg.h
+++ b/arch/arm/mach-bcm283x/include/mach/msg.h
@@ -48,4 +48,11 @@
int pixel_order, int alpha_mode, ulong *fb_basep,
ulong *fb_sizep, int *pitchp);
+/**
+ * bcm2711_load_vl805_firmware() - get vl805's firmware loaded
+ *
+ * @return 0 if OK, -EIO on error
+ */
+int bcm2711_notify_vl805_reset(void);
+
#endif