Commit message: "net: dsa: microchip: ".
On Thu, Oct 12, 2023 at 12:55:55PM +0200, Ante Knezic wrote:
> Microchip KSZ8863/KSZ8873 have the ability to select between internal
> and external RMII reference clock. By default, reference clock
> needs to be provided via REFCLKI_3 pin. If required, device can be
> setup to provide RMII clock internally so that REFCLKI_3 pin can be
> left unconnected.
> Add a new "microchip,rmii-clk-internal" property which will set
> RMII clock reference to internal. If property is not set, reference
> clock needs to be provided externally.
>
> Signed-off-by: Ante Knezic <ante.knezic@xxxxxxxxxxx>
> ---
> drivers/net/dsa/microchip/ksz8795.c | 5 +++++
> drivers/net/dsa/microchip/ksz8795_reg.h | 3 +++
> drivers/net/dsa/microchip/ksz_common.c | 3 +++
> drivers/net/dsa/microchip/ksz_common.h | 1 +
> 4 files changed, 12 insertions(+)
>
> diff --git a/drivers/net/dsa/microchip/ksz8795.c b/drivers/net/dsa/microchip/ksz8795.c
> index 91aba470fb2f..78f3a668aa99 100644
> --- a/drivers/net/dsa/microchip/ksz8795.c
> +++ b/drivers/net/dsa/microchip/ksz8795.c
> @@ -1434,6 +1434,11 @@ int ksz8_setup(struct dsa_switch *ds)
> for (i = 0; i < (dev->info->num_vlans / 4); i++)
> ksz8_r_vlan_entries(dev, i);
>
> + if (ksz_is_ksz88x3(dev))
> + ksz_cfg(dev, KSZ88X3_REG_FVID_AND_HOST_MODE,
> + KSZ88X3_PORT3_RMII_CLK_INTERNAL,
> + dev->rmii_clk_internal);
> +
Can this be done in dev->dev_ops->phylink_mac_config() (which so far has no implementation)
for port 3 of ksz88x3?
> return ksz8_handle_global_errata(ds);
> }
>
> diff --git a/drivers/net/dsa/microchip/ksz8795_reg.h b/drivers/net/dsa/microchip/ksz8795_reg.h
> index 3c9dae53e4d8..beca974e0171 100644
> --- a/drivers/net/dsa/microchip/ksz8795_reg.h
> +++ b/drivers/net/dsa/microchip/ksz8795_reg.h
> @@ -22,6 +22,9 @@
> #define KSZ8863_GLOBAL_SOFTWARE_RESET BIT(4)
> #define KSZ8863_PCS_RESET BIT(0)
>
> +#define KSZ88X3_REG_FVID_AND_HOST_MODE 0xC6
> +#define KSZ88X3_PORT3_RMII_CLK_INTERNAL BIT(3)
> +
> #define REG_SW_CTRL_0 0x02
>
> #define SW_NEW_BACKOFF BIT(7)
> diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
> index b800ace40ce1..0a0a53ce5b1b 100644
> --- a/drivers/net/dsa/microchip/ksz_common.c
> +++ b/drivers/net/dsa/microchip/ksz_common.c
> @@ -4160,6 +4160,9 @@ int ksz_switch_register(struct ksz_device *dev)
> }
> }
>
> + dev->rmii_clk_internal = of_property_read_bool(dev->dev->of_node,
> + "microchip,rmii-clk-internal");
Port property.
> +
> ret = dsa_register_switch(dev->ds);
> if (ret) {
> dev->dev_ops->exit(dev);
> diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
> index 8842efca0871..e5b0445fe2ca 100644
> --- a/drivers/net/dsa/microchip/ksz_common.h
> +++ b/drivers/net/dsa/microchip/ksz_common.h
> @@ -163,6 +163,7 @@ struct ksz_device {
> phy_interface_t compat_interface;
> bool synclko_125;
> bool synclko_disable;
> + bool rmii_clk_internal;
>
> struct vlan_table *vlan_cache;
>
> --
> 2.11.0
