[PATCH v1] brcmfmac: increase F2 watermark for BCM4329

[PATCH v1] brcmfmac: increase F2 watermark for BCM4329

[Dmitry Osipenko]

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.

Signed-off-by: Dmitry Osipenko <digetx@gmail.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",
 				  CY_4339_F2_WATERMARK);
-- 
2.27.0

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

[Arend Van Spriel]

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@broadcom.com>
> Signed-off-by: Dmitry Osipenko <digetx@gmail.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.

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

[Dmitry Osipenko]

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@broadcom.com>
>> Signed-off-by: Dmitry Osipenko <digetx@gmail.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!