Re: [PATCH v2] brcmfmac: Add support for BCM43596 PCIe Wi-Fi
From: Arend Van Spriel
Date: Fri Dec 02 2022 - 14:28:37 EST
On 12/2/2022 4:26 PM, Arend van Spriel wrote:
On 12/2/2022 11:33 AM, Konrad Dybcio wrote:
On 1.12.2022 12:31, Arend van Spriel wrote:
On 11/28/2022 3:40 PM, Konrad Dybcio wrote:
On 26.11.2022 22:45, Linus Walleij wrote:
On Fri, Nov 25, 2022 at 1:25 PM Kalle Valo <kvalo@xxxxxxxxxx> wrote:
Konrad Dybcio <konrad.dybcio@xxxxxxxxxx> writes:
On 25.11.2022 12:53, Kalle Valo wrote:
Konrad Dybcio <konrad.dybcio@xxxxxxxxxx> writes:
On 21.11.2022 14:56, Linus Walleij wrote:
On Fri, Nov 18, 2022 at 5:47 PM Konrad Dybcio
<konrad.dybcio@xxxxxxxxxx> wrote:
I can think of a couple of hacky ways to force use of 43596
fw, but I
don't think any would be really upstreamable..
If it is only known to affect the Sony Xperias mentioned then
a thing such as:
if (of_machine_is_compatible("sony,xyz") ||
of_machine_is_compatible("sony,zzz")... ) {
// Enforce FW version
}
would be completely acceptable in my book. It hammers the
problem from the top instead of trying to figure out itsy witsy
details about firmware revisions.
Yours,
Linus Walleij
Actually, I think I came up with a better approach by pulling a
page
out of Asahi folks' book - please take a look and tell me what you
think about this:
[1]
https://github.com/SoMainline/linux/commit/4b6fccc995cd79109b0dae4e4ab2e48db97695e7
[2]
https://github.com/SoMainline/linux/commit/e3ea1dc739634f734104f37fdbed046873921af7
Something in this direction works too.
The upside is that it tells all operating systems how to deal
with the firmware for this hardware.
Instead of a directory path ("brcm/brcmfmac43596-pcie") why not
provide
just the chipset name ("brcmfmac43596-pcie")? IMHO it's
unnecessary to
have directory names in Device Tree.
I think it's common practice to include a full
$FIRMWARE_DIR-relative
path when specifying firmware in DT, though here I left out the
board
name bit as that's assigned dynamically anyway. That said, if you
don't
like it, I can change it.
It's just that I have understood that Device Tree is supposed to
describe hardware and to me a firmware directory "brcm/" is a
software
property, not a hardware property. But this is really for the Device
Tree maintainers to decide, they know this best :)
I would personally just minimize the amount of information
put into the device tree to be exactly what is needed to find
the right firmware.
brcm,firmware-compatible = "43596";
since the code already knows how to conjure the rest of the string.
But check with Rob/Krzysztof.
Yours,
Linus Walleij
Krzysztof, Rob [added to CC] - can I have your opinions?
I tried catching up on this thread. Reading it I am not sure what the
issue is, but I am happy to dive in. If you can provide a boot log
with brcmfmac loaded with module parameter 'debug=0x1416' I can try
and make sense of the chipid/devid confusion.
Hope this helps, thanks! https://hastebin.com/xidagekuge.yaml
It does to some extent. It is basically a 4359 revision 9:
[ 25.898782] brcmfmac: brcmf_chip_recognition found AXI chip: BCM4359/9
The 4359 entry in pcie.c is applicable for revision 0 and higher
(doubtful but that is in the code):
BRCMF_FW_ENTRY(BRCM_CC_4359_CHIP_ID, 0xFFFFFFFF, 4359),
We need to change the mask above to 0x000001FF and add a new entry with
mask 0xFFFFFE00. All we need is come up with a reasonable firmware
filename. So can you run the strings command on the firmware you use:
$ strings fw.bin | tail -1
and let me know the output.
Actually realized you already provided a URL to the repo containing the
firmware you used. So I had a look and it shows:
43596a0-roml/pcie-ag-apcs-pktctx-proptxstatus-ampduhostreorder-lpc-die3-olpc-pspretend-mfp-ltecx-clm_43xx_somc_mimo-phyflags-txpwrctrls-dpo
Version: 9.75.119.15 (r691661) CRC: a6cf427b Date: Fri 2017-03-24
13:24:25 KST Ucode Ver: 1060.20542 FWID: 01-e4abc35c
However, from firmware perspective this is equivalent to 4359c0 so I
would suggest the change below.
Let me know if that works.
Regards,
Arend
---
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
index cf564adc612a..b59cf0f2939c 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
@@ -55,6 +55,7 @@ BRCMF_FW_CLM_DEF(4356, "brcmfmac4356-pcie");
BRCMF_FW_CLM_DEF(43570, "brcmfmac43570-pcie");
BRCMF_FW_DEF(4358, "brcmfmac4358-pcie");
BRCMF_FW_DEF(4359, "brcmfmac4359-pcie");
+BCRMF_FW_DEF(4359C, "brcmfmac4359c-pcie");
BRCMF_FW_DEF(4364, "brcmfmac4364-pcie");
BRCMF_FW_DEF(4365B, "brcmfmac4365b-pcie");
BRCMF_FW_DEF(4365C, "brcmfmac4365c-pcie");
@@ -83,7 +84,8 @@ static const struct brcmf_firmware_mapping
brcmf_pcie_fwnames[] = {
BRCMF_FW_ENTRY(BRCM_CC_43569_CHIP_ID, 0xFFFFFFFF, 43570),
BRCMF_FW_ENTRY(BRCM_CC_43570_CHIP_ID, 0xFFFFFFFF, 43570),
BRCMF_FW_ENTRY(BRCM_CC_4358_CHIP_ID, 0xFFFFFFFF, 4358),
- BRCMF_FW_ENTRY(BRCM_CC_4359_CHIP_ID, 0xFFFFFFFF, 4359),
+ BRCMF_FW_ENTRY(BRCM_CC_4359_CHIP_ID, 0x000001FF, 4359),
+ BRCMF_FW_ENTRY(BRCM_CC_4359_CHIP_ID, 0xFFFFFE00, 4359C),
BRCMF_FW_ENTRY(BRCM_CC_4364_CHIP_ID, 0xFFFFFFFF, 4364),
BRCMF_FW_ENTRY(BRCM_CC_4365_CHIP_ID, 0x0000000F, 4365B),
BRCMF_FW_ENTRY(BRCM_CC_4365_CHIP_ID, 0xFFFFFFF0, 4365C),