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[net-next,v3,0/2] net: micrel: Add support for lan8841 PHY

Message ID 20230206082302.958826-1-horatiu.vultur@microchip.com
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Series net: micrel: Add support for lan8841 PHY | expand

Message

Horatiu Vultur Feb. 6, 2023, 8:23 a.m. UTC 
Add support for lan8841 PHY.

The first patch add the support for lan8841 PHY which can run at
10/100/1000Mbit. It also has support for other features, but they are not
added in this series.

The second patch updates the documentation for the dt-bindings which is
similar to the ksz9131.

v2->v3:
- reuse ksz9131_config_init
- allow only open-drain configuration
- change from single patch to a patch series

v1->v2:
- Remove hardcoded values
- Fix typo in commit message

Horatiu Vultur (2):
  net: micrel: Add support for lan8841 PHY
  dt-bindings: net: micrel-ksz90x1.txt: Update for lan8841

 .../bindings/net/micrel-ksz90x1.txt           |   1 +
 drivers/net/phy/micrel.c                      | 187 +++++++++++++++++-
 include/linux/micrel_phy.h                    |   1 +
 3 files changed, 180 insertions(+), 9 deletions(-)

Comments

Andrew Lunn Feb. 6, 2023, 1:30 p.m. UTC | #1 
> +#define LAN8841_MMD_TIMER_REG			0
> +#define LAN8841_MMD0_REGISTER_17		17
> +#define LAN8841_MMD0_REGISTER_17_DROP_OPT(x)	((x) & 0x3)
> +#define LAN8841_MMD0_REGISTER_17_XMIT_TOG_TX_DIS	BIT(3)
> +#define LAN8841_OPERATION_MODE_STRAP_OVERRIDE_LOW_REG	2
> +#define LAN8841_OPERATION_MODE_STRAP_OVERRIDE_LOW_REG_MAGJACK	BIT(14)
> +#define LAN8841_MMD_ANALOG_REG			28
> +#define LAN8841_ANALOG_CONTROL_1		1
> +#define LAN8841_ANALOG_CONTROL_1_PLL_TRIM(x)	(((x) & 0x3) << 5)
> +#define LAN8841_ANALOG_CONTROL_10		13
> +#define LAN8841_ANALOG_CONTROL_10_PLL_DIV(x)	((x) & 0x3)
> +#define LAN8841_ANALOG_CONTROL_11		14
> +#define LAN8841_ANALOG_CONTROL_11_LDO_REF(x)	(((x) & 0x7) << 12)
> +#define LAN8841_TX_LOW_I_CH_C_D_POWER_MANAGMENT	69
> +#define LAN8841_TX_LOW_I_CH_C_D_POWER_MANAGMENT_VAL 0xbffc
> +#define LAN8841_BTRX_POWER_DOWN			70
> +#define LAN8841_BTRX_POWER_DOWN_QBIAS_CH_A	BIT(0)
> +#define LAN8841_BTRX_POWER_DOWN_BTRX_CH_A	BIT(1)
> +#define LAN8841_BTRX_POWER_DOWN_QBIAS_CH_B	BIT(2)
> +#define LAN8841_BTRX_POWER_DOWN_BTRX_CH_B	BIT(3)
> +#define LAN8841_BTRX_POWER_DOWN_BTRX_CH_C	BIT(5)
> +#define LAN8841_BTRX_POWER_DOWN_BTRX_CH_D	BIT(7)
> +#define LAN8841_ADC_CHANNEL_MASK		198
> +static int lan8841_config_init(struct phy_device *phydev)
> +{
> +	int err;

It would be good to add a blank line before the function.

> +	int ret;

I don't think you need both err and ret. But i expect the compiler is
optimising one of them out anyway.

> +
> +#define LAN8841_OUTPUT_CTRL			25
> +#define LAN8841_OUTPUT_CTRL_INT_BUFFER		BIT(14)
> +static int lan8841_config_intr(struct phy_device *phydev)
> +{

Blank line again, it helpers make the functions stand out.


> +#define LAN8841_OPERATION_MODE_STRAP_LOW_REGISTER 3
> +#define LAN8841_OPERATION_MODE_STRAP_LOW_REGISTER_STRAP_RGMII_EN BIT(0)
> +static int lan8841_probe(struct phy_device *phydev)
> +{
> +	int err;

...

	Andrew