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brcmfmac: Add DMI nvram filename quirk for Acer A1 840 tablet

PATCH Superseded Hans de Goede 2 participants 2 messages Oct 20, 2025 – Oct 30, 2025 Broadcom BRCM80211 IEEE802.11 wireless drivers

v1 of 2 Superseded Latest is v2 →

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Hans de Goede

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PATCH 1/1 brcmfmac: Add DMI nvram filename quirk for Acer A1 840 tablet

The Acer A1 840 tablet contains quite generic names in the sys_vendor and product_name DMI strings, without this patch brcmfmac will try to load:
brcmfmac43340-sdio.Insyde-BayTrail.txt as nvram file which is a bit too generic.

Add a DMI quirk so that a unique and clearly identifiable nvram file name is used on the Acer A1 840 tablet.

Signed-off-by Hans de Goede <[email protected]>
---
 .../net/wireless/broadcom/brcm80211/brcmfmac/dmi.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c +14 -0
index c3a602197662..abe7f6501e5e 100644
@@ -24,6 +24,10 @@ static const struct brcmf_dmi_data acepc_t8_data = {
 	BRCM_CC_4345_CHIP_ID, 6, "acepc-t8"
 };
 
+static const struct brcmf_dmi_data acer_a1_840_data = {
+	BRCM_CC_43340_CHIP_ID, 2, "acer-a1-840"
+};
+
 /* The Chuwi Hi8 Pro uses the same Ampak AP6212 module as the Chuwi Vi8 Plus
  * and the nvram for the Vi8 Plus is already in linux-firmware, so use that.
  */

@@ -91,6 +95,16 @@ static const struct dmi_system_id dmi_platform_data[] = {
 		},
 		.driver_data = (void *)&acepc_t8_data,
 	},
+	{
+		/* Acer Iconia One 8 A1-840 (non FHD version) */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Insyde"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "BayTrail"),
+			/* Above strings are too generic also match BIOS date */
+			DMI_MATCH(DMI_BIOS_DATE, "04/01/2014"),
+		},
+		.driver_data = (void *)&acer_a1_840_data,
+	},
 	{
 		/* Chuwi Hi8 Pro with D2D3_Hi8Pro.233 BIOS */
 		.matches = {
Signature · 1 line
2.51.0
maintainer Acked-by on v1 1/1
#1 lore raw
Quoted 7 lines · Hans de Goede

The Acer A1 840 tablet contains quite generic names in the sys_vendor and product_name DMI strings, without this patch brcmfmac will try to load:
brcmfmac43340-sdio.Insyde-BayTrail.txt as nvram file which is a bit too generic.

Add a DMI quirk so that a unique and clearly identifiable nvram file name is used on the Acer A1 840 tablet.

Thanks, Hans

Please note that the subject should start with subtree name, ie. 'wifi' prefixed:

wifi: brcmfmac: Add DMI nvram filename quirk for Acer A1 840 tablet

Apart from that...

Acked-by Arend van Spriel <[email protected]>
Quoted 4 lines
Signed-off-by Hans de Goede <[email protected]>
---
  .../net/wireless/broadcom/brcm80211/brcmfmac/dmi.c | 14 ++++++++++++++
  1 file changed, 14 insertions(+)