linux-kernel - Re: [PATCH v1] brcmfmac: increase F2 watermark for BCM4329

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Message-ID: <1ac6d0f3-d639-e947-4108-17ecc0220a1e@gmail.com>
Date:   Mon, 24 Aug 2020 18:27:05 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Arend Van Spriel <arend.vanspriel@...adcom.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Chi-Hsien Lin <chi-hsien.lin@...ress.com>,
        Wright Feng <wright.feng@...ress.com>,
        Kalle Valo <kvalo@...eaurora.org>
Cc:     linux-wireless@...r.kernel.org,
        brcm80211-dev-list.pdl@...adcom.com,
        brcm80211-dev-list@...ress.com, netdev@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] brcmfmac: increase F2 watermark for BCM4329

24.08.2020 11:28, Arend Van Spriel пишет:
> 
> 
> On 8/23/2020 4:20 PM, Dmitry Osipenko wrote:
>> This patch fixes SDHCI CRC errors during of RX throughput testing on
>> BCM4329 chip if SDIO BUS is clocked above 25MHz. In particular the
>> checksum problem is observed on NVIDIA Tegra20 SoCs. The good watermark
>> value is borrowed from downstream BCMDHD driver and it's the same as the
>> value used for the BCM4339 chip, hence let's re-use it for BCM4329.
> 
> one comment, but when fixed you can add my....
> 
> Reviewed-by: Arend van Spriel <arend.vanspriel@...adcom.com>
>> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
>> ---
>>   drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
>> b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
>> index 3c07d1bbe1c6..ac3ee93a2378 100644
>> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
>> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c
>> @@ -4278,6 +4278,7 @@ static void brcmf_sdio_firmware_callback(struct
>> device *dev, int err,
>>               brcmf_sdiod_writeb(sdiod, SBSDIO_FUNC1_MESBUSYCTRL,
>>                          CY_43012_MESBUSYCTRL, &err);
>>               break;
>> +        case SDIO_DEVICE_ID_BROADCOM_4329:
>>           case SDIO_DEVICE_ID_BROADCOM_4339:
>>               brcmf_dbg(INFO, "set F2 watermark to 0x%x*4 bytes for
>> 4339\n",
> 
> Maybe better to drop the chip id from the debug message. The chip id is
> printed elsewhere already so it does not add info here and could only
> cause confusion. Maybe you can also remove it from the 43455 message a
> bit below.

Hello, Arend! Thank you for the review! I'll prepare v2 with the cleaned
debug messages and couple more small changes!