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?
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