linux-kernel - Re: [PATCH 2/3] mfd: rk8xx-core: Configure `rk808-clkout2` function

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Message-ID: <20260113110444.GD1902656@google.com>
Date: Tue, 13 Jan 2026 11:04:44 +0000
From: Lee Jones <lee@...nel.org>
To: guptarud@...il.com
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiko Stuebner <heiko@...ech.de>, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Kamil Trzciński <ayufan@...fan.eu>,
	Martijn Braam <martijn@...xit.nl>, Ondrej Jirman <megi@....cz>
Subject: Re: [PATCH 2/3] mfd: rk8xx-core: Configure `rk808-clkout2` function

On Mon, 12 Jan 2026, Rudraksha Gupta via B4 Relay wrote:

> From: Kamil Trzciński <ayufan@...fan.eu>
> 
> While the Wifi and Bluetooth chip are defined in the Pinephone Pro's
> DTS, it actually isn't able to be used. Let's define rk808-clkout2 so
> that userspace can actually interact with Wifi and Bluetooth
> 
> Co-developed-by: Martijn Braam <martijn@...xit.nl>
> Signed-off-by: Martijn Braam <martijn@...xit.nl>
> Signed-off-by: Kamil Trzciński <ayufan@...fan.eu>
> Signed-off-by: Ondrej Jirman <megi@....cz>
> Signed-off-by: Rudraksha Gupta <guptarud@...il.com>

This is a bonkers amount of SoBs for a 3-line change.

What on earth is going on here?

> ---
>  drivers/mfd/rk8xx-core.c  | 1 +
>  include/linux/mfd/rk808.h | 2 ++
>  2 files changed, 3 insertions(+)
> 
> diff --git a/drivers/mfd/rk8xx-core.c b/drivers/mfd/rk8xx-core.c
> index def4587fdfb8..602218694334 100644
> --- a/drivers/mfd/rk8xx-core.c
> +++ b/drivers/mfd/rk8xx-core.c
> @@ -282,6 +282,7 @@ static const struct rk808_reg_data rk818_pre_init_reg[] = {
>  	{ RK818_H5V_EN_REG,	  BIT(0),	    RK818_H5V_EN },
>  	{ RK808_VB_MON_REG,	  MASK_ALL,	    VB_LO_ACT |
>  						    VB_LO_SEL_3500MV },
> +	{ RK808_CLK32OUT_REG, CLK32KOUT2_FUNC_MASK, CLK32KOUT2_FUNC },
>  };
>  
>  static const struct regmap_irq rk805_irqs[] = {
> diff --git a/include/linux/mfd/rk808.h b/include/linux/mfd/rk808.h
> index 28170ee08898..077fe2e15b78 100644
> --- a/include/linux/mfd/rk808.h
> +++ b/include/linux/mfd/rk808.h
> @@ -934,6 +934,8 @@ enum rk806_dvs_mode {
>  
>  #define VOUT_LO_INT	BIT(0)
>  #define CLK32KOUT2_EN	BIT(0)
> +#define CLK32KOUT2_FUNC		(0 << 1)
> +#define CLK32KOUT2_FUNC_MASK	BIT(1)
>  
>  #define TEMP105C			0x08
>  #define TEMP115C			0x0c
> 
> -- 
> 2.52.0
> 
> 

-- 
Lee Jones [李琼斯]