From: Hector Martin <marcan@xxxxxxxxx>
On Apple ARM64 platforms, firmware selection requires two properties
that come from system firmware: the module-instance (aka "island", a
codename representing a given hardware platform) and the antenna-sku.
We map Apple's module codenames to board_types in the form
"apple,<module-instance>".
The mapped board_type is added to the DTS file in that form, while the
antenna-sku is forwarded by our bootloader from the Apple Device Tree
into the FDT. Grab them from the DT so firmware selection can use
them.
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Hector Martin <marcan@xxxxxxxxx>
Reviewed-by: Alvin Šipraga <alsi@xxxxxxxxxxxxxxx>
Signed-off-by: Russell King (Oracle) <rmk+kernel@xxxxxxxxxxxxxxx>
---
.../wireless/broadcom/brcm80211/brcmfmac/common.h | 1 +
.../net/wireless/broadcom/brcm80211/brcmfmac/of.c | 12 +++++++++++-
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h
index 6c5a22a32a96..aa25abffcc7d 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h
@@ -53,6 +53,7 @@ struct brcmf_mp_device {
struct brcmfmac_pd_cc *country_codes;
const char *board_type;
unsigned char mac[ETH_ALEN];
+ const char *antenna_sku;
union {
struct brcmfmac_sdio_pd sdio;
} bus;
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
index 79388d49c256..a83699de01ec 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
@@ -70,14 +70,24 @@ void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type,
{
struct brcmfmac_sdio_pd *sdio = &settings->bus.sdio;
struct device_node *root, *np = dev->of_node;
+ const char *prop;
int irq;
int err;
u32 irqf;
u32 val;
+ /* Apple ARM64 platforms have their own idea of board type, passed in
+ * via the device tree. They also have an antenna SKU parameter
+ */
+ if (!of_property_read_string(np, "brcm,board-type", &prop))
+ settings->board_type = prop;
+
+ if (!of_property_read_string(np, "apple,antenna-sku", &prop))
+ settings->antenna_sku = prop;
+
/* Set board-type to the first string of the machine compatible prop */
root = of_find_node_by_path("/");
- if (root) {
+ if (root && !settings->board_type) {
char *board_type;
const char *tmp;
--
2.30.2
