diff options
Diffstat (limited to 'package/kernel/mac80211/patches/brcm/329-v5.0-0006-brcmfmac-update-43012-F2-watermark-setting-to-fix-DM.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/brcm/329-v5.0-0006-brcmfmac-update-43012-F2-watermark-setting-to-fix-DM.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/brcm/329-v5.0-0006-brcmfmac-update-43012-F2-watermark-setting-to-fix-DM.patch b/package/kernel/mac80211/patches/brcm/329-v5.0-0006-brcmfmac-update-43012-F2-watermark-setting-to-fix-DM.patch new file mode 100644 index 0000000000..3b44952af4 --- /dev/null +++ b/package/kernel/mac80211/patches/brcm/329-v5.0-0006-brcmfmac-update-43012-F2-watermark-setting-to-fix-DM.patch @@ -0,0 +1,49 @@ +From f95a8d9c6aca196f1ace5b2e53a3dd3bc491b1b3 Mon Sep 17 00:00:00 2001 +From: Naveen Gupta <naveen.gupta@cypress.com> +Date: Wed, 21 Nov 2018 07:53:49 +0000 +Subject: [PATCH] brcmfmac: update 43012 F2 watermark setting to fix DMA Error + during UDP RX Traffic + +The number of words that the read FIFO has to contain except +the end of frame before sends data back to the host. +Max watermark = (512B - 2* (BurstLength))/4 = +(512 - 128)/4 = 384/4 = 0x60 +so if burst length (i.e. BurstLength = 64) is increased, +watermark has to be reduced. This is the optimal setting for this chip. + +Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com> +Signed-off-by: Naveen Gupta <naveen.gupta@cypress.com> +Signed-off-by: Chi-Hsien Lin <chi-hsien.lin@cypress.com> +Signed-off-by: Kalle Valo <kvalo@codeaurora.org> +--- + .../net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 12 ++++++++++++ + 1 file changed, 12 insertions(+) + +--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c ++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c +@@ -52,6 +52,7 @@ + /* watermark expressed in number of words */ + #define DEFAULT_F2_WATERMARK 0x8 + #define CY_4373_F2_WATERMARK 0x40 ++#define CY_43012_F2_WATERMARK 0x60 + + #ifdef DEBUG + +@@ -4173,6 +4174,17 @@ static void brcmf_sdio_firmware_callback + CY_4373_F2_WATERMARK | + SBSDIO_MESBUSYCTRL_ENAB, &err); + break; ++ case SDIO_DEVICE_ID_CYPRESS_43012: ++ brcmf_dbg(INFO, "set F2 watermark to 0x%x*4 bytes\n", ++ CY_43012_F2_WATERMARK); ++ brcmf_sdiod_writeb(sdiod, SBSDIO_WATERMARK, ++ CY_43012_F2_WATERMARK, &err); ++ devctl = brcmf_sdiod_readb(sdiod, SBSDIO_DEVICE_CTL, ++ &err); ++ devctl |= SBSDIO_DEVCTL_F2WM_ENAB; ++ brcmf_sdiod_writeb(sdiod, SBSDIO_DEVICE_CTL, devctl, ++ &err); ++ break; + default: + brcmf_sdiod_writeb(sdiod, SBSDIO_WATERMARK, + DEFAULT_F2_WATERMARK, &err); |