[PATCH v3 1/2] usb: musb-new: sunxi: only perform SRAM initialization when necessary

[Sam Edwards]

Only the older (ca. A10, A20) sunxis need this poke for the MUSB to
function. Mimic the Linux kernel and add a `has_sram` flag to the config
structure that is only set for the specific compatibles that require
this initialization.

Signed-off-by: Sam Edwards <CFSworks at gmail.com>
Reviewed-by: Andre Przywara <andre.przywara at arm.com>
Tested-by: Andre Przywara <andre.przywara at arm.com>
---
 drivers/usb/musb-new/sunxi.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/musb-new/sunxi.c b/drivers/usb/musb-new/sunxi.c
index c5c63249aa..1111a67eaf 100644
--- a/drivers/usb/musb-new/sunxi.c
+++ b/drivers/usb/musb-new/sunxi.c
@@ -83,6 +83,7 @@
 
 struct sunxi_musb_config {
 	struct musb_hdrc_config *config;
+	bool has_sram;
 };
 
 struct sunxi_glue {
@@ -311,7 +312,10 @@ static int sunxi_musb_init(struct musb *musb)
 
 	musb->isr = sunxi_musb_interrupt;
 
-	USBC_ConfigFIFO_Base();
+	if (glue->cfg->has_sram) {
+		USBC_ConfigFIFO_Base();
+	}
+
 	USBC_EnableDpDmPullUp(musb->mregs);
 	USBC_EnableIdPullUp(musb->mregs);
 
@@ -517,6 +521,7 @@ static int musb_usb_remove(struct udevice *dev)
 
 static const struct sunxi_musb_config sun4i_a10_cfg = {
 	.config = &musb_config,
+	.has_sram = true,
 };
 
 static const struct sunxi_musb_config sun6i_a31_cfg = {
-- 
2.39.2