[PATCH v4 04/16] net: phy: Add helper for mapping RGMII link speed to clock rate

[Andrew Lunn]

On Mon, Oct 28, 2024 at 09:24:46PM +0100, Jan Petrous via B4 Relay wrote:
> From: "Jan Petrous (OSS)" <jan.petrous at oss.nxp.com>
> 
> The RGMII interface supports three data rates: 10/100 Mbps
> and 1 Gbps. These speeds correspond to clock frequencies
> of 2.5/25 MHz and 125 MHz, respectively.
> 
> Many Ethernet drivers, including glues in stmmac, follow
> a similar pattern of converting RGMII speed to clock frequency.
> 
> To simplify code, define the helper rgmii_clock(speed)
> to convert connection speed to clock frequency.
> 
> Suggested-by: Russell King (Oracle) <rmk+kernel at armlinux.org.uk>
> Signed-off-by: Jan Petrous (OSS) <jan.petrous at oss.nxp.com>

Reviewed-by: Andrew Lunn <andrew at lunn.ch>

    Andrew