diff options
Diffstat (limited to 'package/kernel/mac80211/patches/316-v4.16-0002-brcmfmac-add-comment-block-in-brcmf_sdio_buscore_rea.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/316-v4.16-0002-brcmfmac-add-comment-block-in-brcmf_sdio_buscore_rea.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/316-v4.16-0002-brcmfmac-add-comment-block-in-brcmf_sdio_buscore_rea.patch b/package/kernel/mac80211/patches/316-v4.16-0002-brcmfmac-add-comment-block-in-brcmf_sdio_buscore_rea.patch new file mode 100644 index 0000000000..dc78000be1 --- /dev/null +++ b/package/kernel/mac80211/patches/316-v4.16-0002-brcmfmac-add-comment-block-in-brcmf_sdio_buscore_rea.patch @@ -0,0 +1,31 @@ +From 32adbcaa5df49f1977441f7a4bf180a0bcfe9966 Mon Sep 17 00:00:00 2001 +From: Arend Van Spriel <arend.vanspriel@broadcom.com> +Date: Tue, 9 Jan 2018 13:22:53 +0100 +Subject: [PATCH] brcmfmac: add comment block in brcmf_sdio_buscore_read() + +In brcmf_sdio_buscore_read() there is some special handling upon +register access to chipid register of the chipcommon core. Add +comment explaining why it is done here. + +Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com> +Signed-off-by: Kalle Valo <kvalo@codeaurora.org> +--- + drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 7 +++++++ + 1 file changed, 7 insertions(+) + +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c +@@ -3772,6 +3772,13 @@ static u32 brcmf_sdio_buscore_read32(voi + + val = brcmf_sdiod_readl(sdiodev, addr, NULL); + ++ /* ++ * this is a bit of special handling if reading the chipcommon chipid ++ * register. The 4339 is a next-gen of the 4335. It uses the same ++ * SDIO device id as 4335 and the chipid register returns 4335 as well. ++ * It can be identified as 4339 by looking at the chip revision. It ++ * is corrected here so the chip.c module has the right info. ++ */ + if (addr == CORE_CC_REG(SI_ENUM_BASE, chipid) && + (sdiodev->func1->device == SDIO_DEVICE_ID_BROADCOM_4339 || + sdiodev->func1->device == SDIO_DEVICE_ID_BROADCOM_4335_4339)) { |