linux-kernel - Re: [PATCH] crypto: caam - make soc match data optional

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Date:   Wed, 20 May 2020 03:16:37 +0000
From:   Andrey Smirnov <andrew.smirnov@...il.com>
To:     Horia Geantă <horia.geanta@....com>
Cc:     "linux-crypto@...r.kernel.org" <linux-crypto@...r.kernel.org>,
        Chris Healy <cphealy@...il.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Fabio Estevam <festevam@...il.com>,
        dl-linux-imx <linux-imx@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] crypto: caam - make soc match data optional

On Mon, May 18, 2020 at 6:59 PM Horia Geantă <horia.geanta@....com> wrote:
>
> On 5/16/2020 7:23 AM, Andrey Smirnov wrote:
> > Vyrbrid devices don't have any clock that need to be taken care of, so
> > make clock data optional on i.MX.
> >
> Vybrid Security RM states that IPG clock used by CAAM
> can be gated by CCM_CCGR11[CG176].
>

Cool, looks like I missed this when I was looking through RM.

> Clock driver needs to be updated accordingly,
> and so will CAAM driver and DT node.
>
> I don't have a board at hand, so patch below is not tested.
>

I'll take it from here and test/submit appropriate patches. Thanks!

> Horia
>
> ------ >8 ------
>
> Subject: [PATCH] clk: imx: vf610: add CAAM clock
>
> According to Vybrid Security RM, CCM_CCGR11[CG176] can be used to
> gate CAAM ipg clock.
>
> Signed-off-by: Horia Geantă <horia.geanta@....com>
> ---
>  drivers/clk/imx/clk-vf610.c             | 2 ++
>  include/dt-bindings/clock/vf610-clock.h | 3 ++-
>  2 files changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/clk/imx/clk-vf610.c b/drivers/clk/imx/clk-vf610.c
> index cd04e7dc1878..4f3066cf1b89 100644
> --- a/drivers/clk/imx/clk-vf610.c
> +++ b/drivers/clk/imx/clk-vf610.c
> @@ -439,6 +439,8 @@ static void __init vf610_clocks_init(struct device_node *ccm_node)
>         clk[VF610_CLK_DAP] = imx_clk_gate("dap", "platform_bus", CCM_CCSR, 24);
>         clk[VF610_CLK_OCOTP] = imx_clk_gate("ocotp", "ipg_bus", CCM_CCGR6, CCM_CCGRx_CGn(5));
>
> +       clk[VF610_CLK_CAAM] = imx_clk_gate2("caam", "ipg_bus", CCM_CCGR11, CCM_CCGRx_CGn(0));
> +
>         imx_check_clocks(clk, ARRAY_SIZE(clk));
>
>         clk_set_parent(clk[VF610_CLK_QSPI0_SEL], clk[VF610_CLK_PLL1_PFD4]);
> diff --git a/include/dt-bindings/clock/vf610-clock.h b/include/dt-bindings/clock/vf610-clock.h
> index 95394f35a74a..0f2d60e884dc 100644
> --- a/include/dt-bindings/clock/vf610-clock.h
> +++ b/include/dt-bindings/clock/vf610-clock.h
> @@ -195,6 +195,7 @@
>  #define VF610_CLK_WKPU                 186
>  #define VF610_CLK_TCON0                        187
>  #define VF610_CLK_TCON1                        188
> -#define VF610_CLK_END                  189
> +#define VF610_CLK_CAAM                 189
> +#define VF610_CLK_END                  190
>
>  #endif /* __DT_BINDINGS_CLOCK_VF610_H */
> --
> 2.17.1