Re: [PATCH 4/5] phy: rockchip: naneng-combphy: Add RK3528 support

From: Yao Zi <ziyao@disroot.org>
To: Heiko Stuebner <heiko@sntech.de>, Vinod Koul <vkoul@kernel.org>,
	Kishon Vijay Abraham I <kishon@kernel.org>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Frank Wang <frank.wang@rock-chips.com>,
	Andy Yan <andy.yan@rock-chips.com>,
	Cristian Ciocaltea <cristian.ciocaltea@collabora.com>,
	Detlev Casanova <detlev.casanova@collabora.com>,
	Shresth Prasad <shresthprasad7@gmail.com>,
	Chukun Pan <amadeus@jmu.edu.cn>, Jonas Karlman <jonas@kwiboo.se>
Cc: linux-phy@lists.infradead.org, devicetree@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 4/5] phy: rockchip: naneng-combphy: Add RK3528 support
Date: Thu, 8 May 2025 23:13:25 +0000	[thread overview]
Message-ID: <aB06lQs9d0q8pMU_@pie.lan> (raw)
In-Reply-To: <5349721.GXAFRqVoOG@phil>

On Thu, May 08, 2025 at 07:26:13PM +0200, Heiko Stuebner wrote:
> Am Donnerstag, 8. Mai 2025, 15:53:06 Mitteleuropäische Sommerzeit schrieb Yao Zi:
> > Rockchip RK3528 integrates one naneng-combphy that is able to operate in
> > PCIe and USB3 mode. The control logic is similar to previous variants of
> > naneng-combphy but the register layout is apperantly different from the
> > RK3568 one.
> > 
> > Signed-off-by: Yao Zi <ziyao@disroot.org>
> > ---
> >  .../rockchip/phy-rockchip-naneng-combphy.c    | 180 +++++++++++++++++-
> >  1 file changed, 179 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
> > index 1d1c7723584b..7c92f7ac3c7f 100644
> > --- a/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
> > +++ b/drivers/phy/rockchip/phy-rockchip-naneng-combphy.c
> > @@ -20,7 +20,40 @@
> >  #define REF_CLOCK_25MHz			(25 * HZ_PER_MHZ)
> >  #define REF_CLOCK_100MHz		(100 * HZ_PER_MHZ)
> >  
> > -/* COMBO PHY REG */
> > +/* RK3528 COMBO PHY REG */
> > +#define RK3528_PHYREG6				0x18
> > +#define  RK3528_PHYREG6_PLL_KVCO		GENMASK(12, 10)
> > +#define   RK3528_PHYREG6_PLL_KVCO_VALUE		0x2
> > +#define  RK3528_PHYREG6_SSC_DIR			GENMASK(5, 4)
> > +#define   RK3528_PHYREG6_SSC_UPWARD		0
> > +#define   RK3528_PHYREG6_SSC_DOWNWARD		1
> > +#define RK3528_PHYREG40				0x100
> > +#define  RK3528_PHYREG40_SSC_EN			BIT(20)
> > +#define  RK3528_PHYREG40_SSC_CNT		GENMASK(10, 0)
> > +#define   RK3528_PHYREG40_SSC_CNT_VALUE		0x17d
> > +#define RK3528_PHYREG42				0x108
> > +#define  RK3528_PHYREG42_CKDRV_CLK_SEL		BIT(29)
> > +#define   RK3528_PHYREG42_CKDRV_CLK_PLL		0
> > +#define   RK3528_PHYREG42_CKDRV_CLK_CKRCV	1
> > +#define  RK3528_PHYREG42_PLL_LPF_R1_ADJ		GENMASK(10, 7)
> > +#define   RK3528_PHYREG42_PLL_LPF_R1_ADJ_VALUE	0x9
> > +#define  RK3528_PHYREG42_PLL_CHGPUMP_CUR_ADJ	GENMASK(6, 4)
> > +#define   RK3528_PHYREG42_PLL_CHGPUMP_CUR_ADJ_VALUE 0x7
> > +#define  RK3528_PHYREG42_PLL_KVCO_ADJ		GENMASK(2, 0)
> > +#define   RK3528_PHYREG42_PLL_KVCO_ADJ_VALUE	0x0
> > +#define RK3528_PHYREG80				0x200
> > +#define  RK3528_PHYREG80_CTLE_EN		BIT(17)
> > +#define RK3528_PHYREG81				0x204
> > +#define  RK3528_PHYREG81_CDR_PHASE_PATH_GAIN_2X	BIT(5)
> > +#define  RK3528_PHYREG81_SLEW_RATE_CTRL		GENMASK(2, 0)
> > +#define   RK3528_PHYREG81_SLEW_RATE_CTRL_SLOW	0x7
> > +#define RK3528_PHYREG83				0x20c
> > +#define  RK3528_PHYREG83_RX_SQUELCH		GENMASK(2, 0)
> > +#define   RK3528_PHYREG83_RX_SQUELCH_VALUE	0x6
> > +#define RK3528_PHYREG86				0x218
> > +#define  RK3528_PHYREG86_RTERM_DET_CLK_EN	BIT(14)
> 
> I'd think staying with one layout would be best, so not doing this
> indentation here. Instead maybe follow the other ones like

Though seems more clear, it's reasonable to keep the style consistent.

Will change it in v2, thanks.

> #define RK3528_PHYREG6				0x18
> #define RK3528_PHYREG6_PLL_KVCO		GENMASK(12, 10)
> #define RK3528_PHYREG6_PLL_KVCO_VALUE		0x2
> #define RK3528_PHYREG6_SSC_DIR			GENMASK(5, 4)
> #define RK3528_PHYREG6_SSC_UPWARD		0
> #define RK3528_PHYREG6_SSC_DOWNWARD		1
> 
> #define RK3528_PHYREG40				0x100
> #define RK3528_PHYREG40_SSC_EN			BIT(20)
> #define RK3528_PHYREG40_SSC_CNT		GENMASK(10, 0)
> #define RK3528_PHYREG40_SSC_CNT_VALUE		0x17d
> 
> ...
> 
> i.e. register + bits + blank line
> 
> other than that
> 
> Reviewed-by: Heiko Stuebner <heiko@sntech.de>
> 
> 

Best regards,
Yao Zi