[PATCH v2] net: mv88e6xxx: fix missing SMI address initialization
Stefan Roese
sr at denx.de
Wed Feb 14 08:50:16 CET 2024
Hi Ramon,
On 1/9/24 10:37, Stefan Roese wrote:
> On 12/18/23 17:09, Marek Behún wrote:
>> On Wed, 6 Dec 2023 15:35:56 +0100
>> Marek Mojík <marek.mojik at nic.cz> wrote:
>>
>>> The mv88e6xxx driver does not currently initialize the smi_addr
>>> field, but
>>> instead keeps the default zero value. This leads to driver being
>>> unusable
>>> on devices where the switch is not on address zero of the mdio bus. Fix
>>> this problem by reading the SMI address from device tree.
>>>
>>> Signed-off-by: Marek Mojík <marek.mojik at nic.cz>
>>> ---
>>> drivers/net/mv88e6xxx.c | 8 ++++++++
>>> 1 file changed, 8 insertions(+)
>>>
>>> diff --git a/drivers/net/mv88e6xxx.c b/drivers/net/mv88e6xxx.c
>>> index c073f81e72..8fbbc1cacc 100644
>>> --- a/drivers/net/mv88e6xxx.c
>>> +++ b/drivers/net/mv88e6xxx.c
>>> @@ -745,6 +745,7 @@ static int mv88e6xxx_probe(struct udevice *dev)
>>> {
>>> struct dsa_pdata *dsa_pdata = dev_get_uclass_plat(dev);
>>> struct mv88e6xxx_priv *priv = dev_get_priv(dev);
>>> + fdt_addr_t smi_addr;
>>> int val, ret;
>>> if (ofnode_valid(dev_ofnode(dev)) &&
>>> @@ -753,6 +754,13 @@ static int mv88e6xxx_probe(struct udevice *dev)
>>> return -ENODEV;
>>> }
>>> + smi_addr = dev_read_addr(dev);
>>> + if (smi_addr == FDT_ADDR_T_NONE) {
>>> + dev_err(dev, "Missing SMI address\n");
>>> + return -EINVAL;
>>> + }
>>> + priv->smi_addr = smi_addr;
>>> +
>>> /* probe internal mdio bus */
>>> ret = mv88e6xxx_probe_mdio(dev);
>>> if (ret)
>>
>> Reviewed-by: Marek Behún <kabel at kernel.org>
>
> Reviewed-by: Stefan Roese <sr at denx.de>
>
> Ramon, this patch was assigned to me as an Marvell MVEBU patch
> depends on it. I've assigned it to you now. Or if it's okay that
> I pull it with the Marvell tree, just let me know.
Any updates on this?
Thanks,
Stefan
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