Hello,
On Fri, 14 Feb 2025 13:07:51 +0530
parvathi <parvathi@xxxxxxxxxxx> wrote:
> From: Roger Quadros <rogerq@xxxxxx>
>
> Changes corresponding to link configuration such as speed and duplexity.
> IRQ and handler initializations are performed for packet reception.Firmware
> receives the packet from the wire and stores it into OCMC queue. Next, it
> notifies the CPU via interrupt. Upon receiving the interrupt CPU will
> service the IRQ and packet will be processed by pushing the newly allocated
> SKB to upper layers.
>
> When the user application want to transmit a packet, it will invoke
> sys_send() which will inturn invoke the PRUETH driver, then it will write
> the packet into OCMC queues. PRU firmware will pick up the packet and
> transmit it on to the wire.
>
> Signed-off-by: Roger Quadros <rogerq@xxxxxx>
> Signed-off-by: Andrew F. Davis <afd@xxxxxx>
> Signed-off-by: Basharath Hussain Khaja <basharath@xxxxxxxxxxx>
> Signed-off-by: Parvathi Pudi <parvathi@xxxxxxxxxxx>
> +/* update phy/port status information for firmware */
> +static void icssm_emac_update_phystatus(struct prueth_emac *emac)
> +{
> + struct prueth *prueth = emac->prueth;
> + u32 phy_speed, port_status = 0;
> + enum prueth_mem region;
> + u32 delay;
> +
> + region = emac->dram;
> + phy_speed = emac->speed;
> + icssm_prueth_write_reg(prueth, region, PHY_SPEED_OFFSET, phy_speed);
> +
> + delay = TX_CLK_DELAY_100M;
> +
> + delay = delay << PRUSS_MII_RT_TXCFG_TX_CLK_DELAY_SHIFT;
> +
> + if (emac->port_id) {
> + regmap_update_bits(prueth->mii_rt,
> + PRUSS_MII_RT_TXCFG1,
> + PRUSS_MII_RT_TXCFG_TX_CLK_DELAY_MASK,
> + delay);
> + } else {
> + regmap_update_bits(prueth->mii_rt,
> + PRUSS_MII_RT_TXCFG0,
> + PRUSS_MII_RT_TXCFG_TX_CLK_DELAY_MASK,
> + delay);
> + }
> +
> + if (emac->link)
> + port_status |= PORT_LINK_MASK;
> +
> + writeb(port_status, prueth->mem[region].va + PORT_STATUS_OFFSET);
> +}
> +
> /* called back by PHY layer if there is change in link state of hw port*/
> static void icssm_emac_adjust_link(struct net_device *ndev)
> {
> @@ -369,6 +426,8 @@ static void icssm_emac_adjust_link(struct net_device *ndev)
> emac->link = 0;
> }
>
> + icssm_emac_update_phystatus(emac);
> +
It looks to me like emac->link, emac->speed and emac->duplex are only
used in icssm_emac_update_phystatus(). If you consider either passing
these as parameters to the above function, or simply merge
icssm_emac_update_phystatus() into your adjust_link callback, you can get
rid of these 3 attributes entirely. It even looks like emac->duplex is
simply unused.
Thanks,
Maxime
