On Mon, May 18, 2020 at 6:59 PM Horia Geantă <horia.geanta@xxxxxxx> 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@xxxxxxx>
> ---
> 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
