Thread (30 messages) 30 messages, 7 authors, 2024-07-08

Re: [PATCH v3 5/5] wifi: brcmfmac: Add support for AP6275P

From: Jacobe Zang <hidden>
Date: 2024-07-08 10:09:18
Also in: linux-arm-kernel, linux-devicetree, linux-rockchip, linux-wireless, lkml

quoted
@@ -1721,7 +1723,7 @@ static int brcmf_pcie_download_fw_nvram(struct
brcmf_pciedev_info *devinfo,
 memcpy_toio(devinfo->tcm + address, nvram, nvram_len);
 brcmf_fw_nvram_free(nvram);

- if (devinfo->otp.valid) {
+ if (devinfo->otp.valid || devinfo->ci->chip
So the problem here is that otp validity is not unambiguous. The seed
requirement is mandated by firmware and was introduced for new WCC chips
moving forward.

I would suggest to have a need_seed flag in the driver_data of the device
table (below). It currently is used only for vendor identification.
Because of brcmf_pcie_setup function also need the driver_data, so I tried to define
a global variable named NEED_SEED_FLAG. But marco define didn't allow to modify
value in it, do you think where is the best place to assign the flag? 

Or you still think should add a new macro named BRCMF_PCIE_DEVICE_NEED_SEED?
To be honest, I'm not quite sure which way is the best.
Regards,
Arend
quoted
== BRCM_CC_43752_CHIP_ID) {
 size_t rand_len = BRCMF_RANDOM_SEED_LENGTH;
 struct brcmf_random_seed_footer footer = {
 .length = cpu_to_le32(rand_len),
@@ -2710,6 +2712,7 @@ static const struct pci_device_id
brcmf_pcie_devid_table[] = {
 BRCMF_PCIE_DEVICE(BRCM_PCIE_4366_5G_DEVICE_ID, BCA),
 BRCMF_PCIE_DEVICE(BRCM_PCIE_4371_DEVICE_ID, WCC),
 BRCMF_PCIE_DEVICE(BRCM_PCIE_43596_DEVICE_ID, CYW),
+ BRCMF_PCIE_DEVICE(BRCM_PCIE_43752_DEVICE_ID, WCC),
 BRCMF_PCIE_DEVICE(BRCM_PCIE_4377_DEVICE_ID, WCC),
 BRCMF_PCIE_DEVICE(BRCM_PCIE_4378_DEVICE_ID, WCC),
 BRCMF_PCIE_DEVICE(BRCM_PCIE_4387_DEVICE_ID, WCC),

---
Best Regards
Jacobe
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