On Fri, Sep 06, 2024 at 12:47:31PM GMT, Raj Kumar Bhagat wrote:
> On 9/4/2024 3:27 PM, Caleb Connolly wrote:
> > On SC7280 platforms which are running with TrustZone, it is not
> > necessary to manually map the memory regions used by the wifi hardware.
> > However, ath11k will currently fail to load unless both memory regions
> > are specified.
> >
> > This breaks wifi on the rb3gen2 which only specifies the firmware memory
> > region and does not use the CE region.
> >
> > Adjust the order of operations in ath11k_ahb_fw_resources_init() to
> > check for the wifi-firmware subnode before attempting to parse the
> > memory regions.
> >
> > Signed-off-by: Caleb Connolly <caleb.connolly@xxxxxxxxxx>
> > ---
> > Cc: linux-arm-msm@xxxxxxxxxxxxxxx
> > ---
> > drivers/net/wireless/ath/ath11k/ahb.c | 12 ++++++------
> > 1 file changed, 6 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/net/wireless/ath/ath11k/ahb.c b/drivers/net/wireless/ath/ath11k/ahb.c
> > index 634d385fd9ad..e24f8da565db 100644
> > --- a/drivers/net/wireless/ath/ath11k/ahb.c
> > +++ b/drivers/net/wireless/ath/ath11k/ahb.c
> > @@ -999,20 +999,20 @@ static int ath11k_ahb_fw_resources_init(struct ath11k_base *ab)
> > */
> > if (!ab->hw_params.fixed_fw_mem)
> > return 0;
> >
> > - ret = ath11k_ahb_setup_msa_resources(ab);
> > - if (ret) {
> > - ath11k_err(ab, "failed to setup msa resources\n");
> > - return ret;
> > - }
> > -
> > node = of_get_child_by_name(host_dev->of_node, "wifi-firmware");
> > if (!node) {
> > ab_ahb->fw.use_tz = true;
> > return 0;
> > }
> >
> > + ret = ath11k_ahb_setup_msa_resources(ab);
> > + if (ret) {
> > + ath11k_err(ab, "failed to setup msa resources\n");
> > + return ret;
> > + }
> > +
> > info.fwnode = &node->fwnode;
> > info.parent = host_dev;
> > info.name = node->name;
> > info.dma_mask = DMA_BIT_MASK(32);
>
>
> ath11k_ahb_setup_msa_resources(ab), will only read the device-tree and
> save the memory addresses/size form device-tree to ab_ahb->fw.
> These saved address, only used if "wifi-firmware" node is defined.
> This the node "wifi-firmware" is not defined it is considered to be
> running with TrustZone, and saved addresses are not of use.
>
> This changes looks fine.
If this is a 'Reviewed-by' then please state so in your message by
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Maintainers and patch management systems will pick it up to reflect your
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--
With best wishes
Dmitry
