Hi,
On 20/09/2021 11:52:08+0200, Horatiu Vultur wrote:
> The LAN8804 SKY has same features as that of LAN8804 SKY except that it
On of those part name should be different ;)
> doesn't support 1588, SyncE or Q-USGMII.
>
> This PHY is found inside the LAN966X switches.
>
> Signed-off-by: Horatiu Vultur <[email protected]>
> ---
> drivers/net/phy/micrel.c | 73 ++++++++++++++++++++++++++++++++++++++
> include/linux/micrel_phy.h | 1 +
> 2 files changed, 74 insertions(+)
>
> diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
> index 5c928f827173..34800b547004 100644
> --- a/drivers/net/phy/micrel.c
> +++ b/drivers/net/phy/micrel.c
> @@ -1537,6 +1537,65 @@ static int ksz886x_cable_test_get_status(struct phy_device *phydev,
> return ret;
> }
>
> +#define LAN_EXT_PAGE_ACCESS_CONTROL 0x16
> +#define LAN_EXT_PAGE_ACCESS_ADDRESS_DATA 0x17
> +#define LAN_EXT_PAGE_ACCESS_CTRL_EP_FUNC 0x4000
> +
> +#define LAN8804_ALIGN_SWAP 0x4a
> +#define LAN8804_ALIGN_TX_A_B_SWAP 0x1
> +#define LAN8804_ALIGN_TX_A_B_SWAP_MASK GENMASK(2, 0)
> +#define LAN8814_CLOCK_MANAGEMENT 0xd
> +#define LAN8814_LINK_QUALITY 0x8e
> +
> +static int lanphy_read_page_reg(struct phy_device *phydev, int page, u32 addr)
> +{
> + u32 data;
> +
> + phy_write(phydev, LAN_EXT_PAGE_ACCESS_CONTROL, page);
> + phy_write(phydev, LAN_EXT_PAGE_ACCESS_ADDRESS_DATA, addr);
> + phy_write(phydev, LAN_EXT_PAGE_ACCESS_CONTROL,
> + (page | LAN_EXT_PAGE_ACCESS_CTRL_EP_FUNC));
> + data = phy_read(phydev, LAN_EXT_PAGE_ACCESS_ADDRESS_DATA);
> +
> + return data;
> +}
> +
> +static int lanphy_write_page_reg(struct phy_device *phydev, int page, u16 addr,
> + u16 val)
> +{
> + phy_write(phydev, LAN_EXT_PAGE_ACCESS_CONTROL, page);
> + phy_write(phydev, LAN_EXT_PAGE_ACCESS_ADDRESS_DATA, addr);
> + phy_write(phydev, LAN_EXT_PAGE_ACCESS_CONTROL,
> + (page | LAN_EXT_PAGE_ACCESS_CTRL_EP_FUNC));
> +
> + val = phy_write(phydev, LAN_EXT_PAGE_ACCESS_ADDRESS_DATA, val);
> + if (val) {
> + phydev_err(phydev, "Error: phy_write has returned error %d\n",
> + val);
> + return val;
> + }
> + return 0;
> +}
> +
> +static int lan8804_config_init(struct phy_device *phydev)
> +{
> + int val;
> +
> + /* MDI-X setting for swap A,B transmit */
> + val = lanphy_read_page_reg(phydev, 2, LAN8804_ALIGN_SWAP);
> + val &= ~LAN8804_ALIGN_TX_A_B_SWAP_MASK;
> + val |= LAN8804_ALIGN_TX_A_B_SWAP;
> + lanphy_write_page_reg(phydev, 2, LAN8804_ALIGN_SWAP, val);
> +
> + /* Make sure that the PHY will not stop generating the clock when the
> + * link partner goes down
> + */
> + lanphy_write_page_reg(phydev, 31, LAN8814_CLOCK_MANAGEMENT, 0x27e);
> + lanphy_read_page_reg(phydev, 1, LAN8814_LINK_QUALITY);
> +
> + return 0;
> +}
> +
> static struct phy_driver ksphy_driver[] = {
> {
> .phy_id = PHY_ID_KS8737,
> @@ -1718,6 +1777,20 @@ static struct phy_driver ksphy_driver[] = {
> .get_stats = kszphy_get_stats,
> .suspend = genphy_suspend,
> .resume = kszphy_resume,
> +}, {
> + .phy_id = PHY_ID_LAN8804,
> + .phy_id_mask = MICREL_PHY_ID_MASK,
> + .name = "Microchip LAN966X Gigabit PHY",
> + .config_init = lan8804_config_init,
> + .driver_data = &ksz9021_type,
> + .probe = kszphy_probe,
> + .soft_reset = genphy_soft_reset,
> + .read_status = ksz9031_read_status,
> + .get_sset_count = kszphy_get_sset_count,
> + .get_strings = kszphy_get_strings,
> + .get_stats = kszphy_get_stats,
> + .suspend = genphy_suspend,
> + .resume = kszphy_resume,
> }, {
> .phy_id = PHY_ID_KSZ9131,
> .phy_id_mask = MICREL_PHY_ID_MASK,
> diff --git a/include/linux/micrel_phy.h b/include/linux/micrel_phy.h
> index 3d43c60b49fa..1f7c33b2f5a3 100644
> --- a/include/linux/micrel_phy.h
> +++ b/include/linux/micrel_phy.h
> @@ -28,6 +28,7 @@
> #define PHY_ID_KSZ9031 0x00221620
> #define PHY_ID_KSZ9131 0x00221640
> #define PHY_ID_LAN8814 0x00221660
> +#define PHY_ID_LAN8804 0x00221670
>
> #define PHY_ID_KSZ886X 0x00221430
> #define PHY_ID_KSZ8863 0x00221435
> --
> 2.31.1
>
--
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com