linux-kernel - Re: [RESEND] clk: ppc-corenet: Add Freescale ARM-based platforms CLK_OF

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Date:	Tue, 26 Aug 2014 17:51:03 -0500
From:	Scott Wood <scottwood@...escale.com>
To:	Jingchang Lu <jingchang.lu@...escale.com>
CC:	<mturquette@...aro.org>, <linuxppc-dev@...ts.ozlabs.org>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RESEND] clk: ppc-corenet: Add Freescale ARM-based platforms
 CLK_OF_DECLARE support

On Fri, 2014-08-22 at 17:34 +0800, Jingchang Lu wrote:
> Signed-off-by: Jingchang Lu <jingchang.lu@...escale.com>
> ---
>  drivers/clk/Kconfig           | 7 ++++---
>  drivers/clk/clk-ppc-corenet.c | 5 +++++
>  2 files changed, 9 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/clk/Kconfig b/drivers/clk/Kconfig
> index cfd3af7..8784704 100644
> --- a/drivers/clk/Kconfig
> +++ b/drivers/clk/Kconfig
> @@ -82,11 +82,12 @@ config COMMON_CLK_AXI_CLKGEN
>  	  FPGAs. It is commonly used in Analog Devices' reference designs.
>  
>  config CLK_PPC_CORENET
> -	bool "Clock driver for PowerPC corenet platforms"
> -	depends on PPC_E500MC && OF
> +	bool "Clock driver for PowerPC corenet and compatible ARM-based platforms"
> +	depends on (PPC_E500MC || ARM) && OF

Should the symbol and driver be renamed to something like CLK_FSL_QORIQ?

> diff --git a/drivers/clk/clk-ppc-corenet.c b/drivers/clk/clk-ppc-corenet.c
> index 8e58edf..7692cac 100644
> --- a/drivers/clk/clk-ppc-corenet.c
> +++ b/drivers/clk/clk-ppc-corenet.c
> @@ -305,3 +305,8 @@ static int __init ppc_corenet_clk_init(void)
>  	return platform_driver_register(&ppc_corenet_clk_driver);
>  }
>  subsys_initcall(ppc_corenet_clk_init);
> +
> +CLK_OF_DECLARE(ppc_core_pll_v1, "fsl,qoriq-core-pll-1.0", core_pll_init);
> +CLK_OF_DECLARE(ppc_core_pll_v2, "fsl,qoriq-core-pll-2.0", core_pll_init);
> +CLK_OF_DECLARE(ppc_core_mux_v1, "fsl,qoriq-core-mux-1.0", core_mux_init);
> +CLK_OF_DECLARE(ppc_core_mux_v2, "fsl,qoriq-core-mux-2.0", core_mux_init);

What does this do that the existing platform driver and match table
don't?  Why is it needed for ARM when PPC didn't need it?

-Scott


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