linux-kernel - Re: [PATCH v3 1/7] firmware: rockchip: sip: Add rockchip SIP runtime service

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Date:	Tue, 26 Jul 2016 19:29:33 +0100
From:	Mark Rutland <mark.rutland@....com>
To:	Lin Huang <hl@...k-chips.com>
Cc:	heiko@...ech.de, tixy@...aro.org, typ@...k-chips.com,
	linux-rockchip@...ts.infradead.org, airlied@...ux.ie,
	mturquette@...libre.com, dbasehore@...omium.org,
	sboyd@...eaurora.org, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, dianders@...omium.org,
	xsf@...k-chips.com, cw00.choi@...sung.com,
	kyungmin.park@...sung.com, myungjoo.ham@...sung.com,
	linux-arm-kernel@...ts.infradead.org, mark.yao@...k-chips.com
Subject: Re: [PATCH v3 1/7] firmware: rockchip: sip: Add rockchip SIP runtime
 service

On Fri, Jul 22, 2016 at 05:07:14PM +0800, Lin Huang wrote:
> +config ROCKCHIP_SIP
> +	bool "Rockchip SIP interface"
> +	depends on ARM64 && ARM_PSCI_FW
> +	help
> +	  Say Y here if you want to enable SIP callbacks for Rockchip platforms
> +	  This option enables support for communicating with the ATF.

[...]

> +typedef unsigned long (psci_fn)(unsigned long, unsigned long,
> +				unsigned long, unsigned long);
> +asmlinkage psci_fn __invoke_psci_fn_smc;

Use the SMCCC wrappers (see include/linux/arm-smccc.h).

This is *not* PSCI, even if the same ATF FW provides both services.

NAK for using the PSCI functions.

Thanks,
Mark.