[U-Boot] [PATCH 4/5] spi: cadence_qspi: add reset handling

[Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>]

Am 26.01.2019 um 09:59 schrieb Marek Vasut:
> On 1/25/19 9:30 PM, Simon Goldschmidt wrote:
>> This adds reset handling to the devicetree-enabled denalid nand driver.
>>
>> For backwards compatibility, only a warning is printed when failing to
>> get reset handles.
>>
>> Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
>> ---
>>
>>   drivers/spi/cadence_qspi.c | 9 +++++++++
>>   1 file changed, 9 insertions(+)
>>
>> diff --git a/drivers/spi/cadence_qspi.c b/drivers/spi/cadence_qspi.c
>> index 11fce9c4fe..f68c827e6d 100644
>> --- a/drivers/spi/cadence_qspi.c
>> +++ b/drivers/spi/cadence_qspi.c
>> @@ -8,6 +8,7 @@
>>   #include <dm.h>
>>   #include <fdtdec.h>
>>   #include <malloc.h>
>> +#include <reset.h>
>>   #include <spi.h>
>>   #include <linux/errno.h>
>>   #include "cadence_qspi.h"
>> @@ -154,10 +155,18 @@ static int cadence_spi_probe(struct udevice *bus)
>>   {
>>   	struct cadence_spi_platdata *plat = bus->platdata;
>>   	struct cadence_spi_priv *priv = dev_get_priv(bus);
>> +	struct reset_ctl_bulk reset_bulk;
>> +	int ret;
>>   
>>   	priv->regbase = plat->regbase;
>>   	priv->ahbbase = plat->ahbbase;
>>   
>> +	ret = reset_get_bulk(bus, &reset_bulk);
>> +	if (ret)
>> +		dev_warn(bus, "Cant' get reset: %d\n", ret);
> 
> Can't

Right. Copy & paste from 3/5...

> 
> Also, shouldn't there be some reset_release or reset_free somewhere ?
> What about .remove(), shouldn't that release the reset ?

Ehrm, well... this is my first driver using the reset framework. I 
haven't though of remove. I'll do a V2 for that soon.

Regards,
Simon

> 
>> +	else
>> +		reset_deassert_bulk(&reset_bulk);
>> +
>>   	if (!priv->qspi_is_init) {
>>   		cadence_qspi_apb_controller_init(plat);
>>   		priv->qspi_is_init = 1;
>>
> 
>