linux-kernel - Re: [PATCH v3 3/5] phy: rockchip: naneng-combphy: Add SoC prefix to register definitions

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Message-Id: <DA0DU2P8UWSV.3U07EFFLKBPXQ@cknow.org>
Date: Mon, 19 May 2025 21:26:05 +0200
From: "Diederik de Haas" <didi.debian@...ow.org>
To: "Yao Zi" <ziyao@...root.org>, "Vinod Koul" <vkoul@...nel.org>, "Kishon
 Vijay Abraham I" <kishon@...nel.org>, "Rob Herring" <robh@...nel.org>,
 "Krzysztof Kozlowski" <krzk+dt@...nel.org>, "Conor Dooley"
 <conor+dt@...nel.org>, "Heiko Stuebner" <heiko@...ech.de>, "Frank Wang"
 <frank.wang@...k-chips.com>, "Andy Yan" <andy.yan@...k-chips.com>,
 "Cristian Ciocaltea" <cristian.ciocaltea@...labora.com>, "Detlev Casanova"
 <detlev.casanova@...labora.com>, "Shresth Prasad"
 <shresthprasad7@...il.com>, "Chukun Pan" <amadeus@....edu.cn>, "Jonas
 Karlman" <jonas@...boo.se>
Cc: <linux-phy@...ts.infradead.org>, <devicetree@...r.kernel.org>,
 <linux-arm-kernel@...ts.infradead.org>,
 <linux-rockchip@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 3/5] phy: rockchip: naneng-combphy: Add SoC prefix to
 register definitions

On Mon May 19, 2025 at 6:16 PM CEST, Yao Zi wrote:
> All supported variants of naneng-combphy follow a register layout
> similar to the RK3568 variant with some exceptions of SoC-specific
> registers.
>
> Add RK3568 prefix for the common set of registers and the corresponding
> SoC prefix for SoC-specific registers, making usage of definitions clear
> and preparing for future COMBPHY variants with a different register
> layout.
>
> Signed-off-by: Yao Zi <ziyao@...root.org>
> Reviewed-by: Heiko Stuebner <heiko@...ech.de>
> ---
>  .../rockchip/phy-rockchip-naneng-combphy.c    | 560 +++++++++---------
>  1 file changed, 288 insertions(+), 272 deletions(-)
>
> diff --git a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
> index ce91fb1d5167..1d1c7723584b 100644
> --- a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
> +++ b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
> @@ -21,78 +21,80 @@
>  #define REF_CLOCK_100MHz		(100 * HZ_PER_MHZ)
>  
>  /* COMBO PHY REG */
> <snip>
> -#define PHYREG33_PLL_KVCO_VALUE_RK3576	4
> +#define RK3568_PHYREG6				0x14
> +#define RK3568_PHYREG6_PLL_DIV_MASK		GENMASK(7, 6)
> +#define RK3568_PHYREG6_PLL_DIV_SHIFT		6
> +#define RK3568_PHYREG6_PLL_DIV_2		1
> +
> +#define RK3568_PHYREG7				0x18
> +#define RK3568_PHYREG7_TX_RTERM_MASK		GENMASK(7, 4)
> +#define RK3568_PHYREG7_TX_RTERM_SHIFT		4
> +#define RK3568_PHYREG7_TX_RTERM_50OHM		8
> +#define RK3568_PHYREG7_RX_RTERM_MASK		GENMASK(3, 0)
> +#define RK3568_PHYREG7_RX_RTERM_SHIFT		0
> +#define RK3568_PHYREG7_RX_RTERM_44OHM		15
> +
> +#define RK3568_PHYREG8				0x1C
> +#define RK3568_PHYREG8_SSC_EN			BIT(4)
> +
> +#define RK3568_PHYREG11				0x28
> +#define RK3568_PHYREG11_SU_TRIM_0_7		0xF0
> +
> +#define RK3568_PHYREG12				0x2C
> +#define RK3568_PHYREG12_PLL_LPF_ADJ_VALUE	4
> +
> +#define RK3568_PHYREG13				0x30
> +#define RK3568_PHYREG13_RESISTER_MASK		GENMASK(5, 4)
> +#define RK3568_PHYREG13_RESISTER_SHIFT		0x4
> +#define RK3568_PHYREG13_RESISTER_HIGH_Z		3
> +#define RK3568_PHYREG13_CKRCV_AMP0		BIT(7)
> +
> +#define RK3568_PHYREG14				0x34
> +#define RK3568_PHYREG14_CKRCV_AMP1		BIT(0)
> +
> +#define RK3568_PHYREG15				0x38
> +#define RK3568_PHYREG15_CTLE_EN			BIT(0)
> +#define RK3568_PHYREG15_SSC_CNT_MASK		GENMASK(7, 6)
> +#define RK3568_PHYREG15_SSC_CNT_SHIFT		6
> +#define RK3568_PHYREG15_SSC_CNT_VALUE		1
> +
> +#define RK3568_PHYREG16				0x3C
> +#define RK3568_PHYREG16_SSC_CNT_VALUE		0x5f
> +
> +#define RK3568_PHYREG18				0x44
> +#define RK3568_PHYREG18_PLL_LOOP		0x32
> +
> +#define RK3568_PHYREG32				0x7C
> +#define RK3568_PHYREG32_SSC_MASK		GENMASK(7, 4)
> +#define RK3568_PHYREG32_SSC_DIR_MASK		GENMASK(5, 4)
> +#define RK3568_PHYREG32_SSC_DIR_SHIFT		4
> +#define RK3568_PHYREG32_SSC_UPWARD		0
> +#define RK3568_PHYREG32_SSC_DOWNWARD		1
> +#define RK3568_PHYREG32_SSC_OFFSET_MASK	GENMASK(7, 6)
> +#define RK3568_PHYREG32_SSC_OFFSET_SHIFT	6
> +#define RK3568_PHYREG32_SSC_OFFSET_500PPM	1
> +
> +#define RK3568_PHYREG33				0x80
> +#define RK3568_PHYREG33_PLL_KVCO_MASK		GENMASK(4, 2)
> +#define RK3568_PHYREG33_PLL_KVCO_SHIFT		2
> +#define RK3568_PHYREG33_PLL_KVCO_VALUE		2
> +#define RK3576_PHYREG33_PLL_KVCO_VALUE		4
> +
> +/* RK3588 COMBO PHY registers */
> +#define RK3588_PHYREG27				0x6C
> +#define RK3588_PHYREG27_RX_TRIM			0x4C

Would it be better if RK3588_PHYREG* comes after RK3576_PHYREG*?

Cheers,
  Diederik

> +
> +/* RK3576 COMBO PHY registers */
> +#define RK3576_PHYREG10				0x24
> +#define RK3576_PHYREG10_SSC_PCM_MASK		GENMASK(3, 0)
> +#define RK3576_PHYREG10_SSC_PCM_3500PPM		7
> +
> +#define RK3576_PHYREG17				0x40
> +
> +#define RK3576_PHYREG21				0x50
> +#define RK3576_PHYREG21_RX_SQUELCH_VAL		0x0D
> +
> +#define RK3576_PHYREG30				0x74
>  
>  struct rockchip_combphy_priv;
> <snip>

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