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| author |   Hector Martin <marcan@marcan.st> | 2022-09-16 17:02:51 +0100 |
|---|---|---|
| committer |   Kalle Valo <kvalo@kernel.org> | 2022-09-19 12:59:34 +0300 |
| commit | 7682de8b3351b824a9632b137f17f10951212b53 (patch) | |
| tree | 9f81bef2e2dbff689053133bb7973e8ac4cafa3e /drivers/net/wireless/broadcom | |
| parent | wifi: brcmfmac: pcie: Read Apple OTP information (diff) | |
| download | linux-dev-7682de8b3351b824a9632b137f17f10951212b53.tar.xz linux-dev-7682de8b3351b824a9632b137f17f10951212b53.zip | |
wifi: brcmfmac: of: Fetch Apple properties
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@linaro.org>
Signed-off-by: Hector Martin <marcan@marcan.st>
Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/E1oZDnn-0077aS-NA@rmk-PC.armlinux.org.uk
Diffstat (limited to 'drivers/net/wireless/broadcom')
| -rw-r--r-- | drivers/net/wireless/broadcom/brcm80211/brcmfmac/common.h | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c | 12 |
2 files changed, 12 insertions, 1 deletions
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; |