[PATCH net-next 06/12] brcmfmac: of: Fetch Apple properties
From: Russell King (Oracle) <hidden>
Date: 2022-09-07 07:48:43
Also in:
asahi, linux-arm-kernel, linux-devicetree, linux-wireless
Subsystem:
broadcom brcm80211 ieee802.11 wireless drivers, the rest · Maintainers:
Arend van Spriel, Linus Torvalds
From: Hector Martin <redacted> 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 <redacted> Signed-off-by: Hector Martin <redacted> Signed-off-by: Russell King (Oracle) <redacted> --- .../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