Reviewed-by: Gaurav Jain <gaurav.jain@xxxxxxx>
> -----Original Message-----
> From: Pankaj Gupta <pankaj.gupta@xxxxxxx>
> Sent: Wednesday, April 10, 2024 1:28 PM
> To: Gaurav Jain <gaurav.jain@xxxxxxx>; Horia Geanta <horia.geanta@xxxxxxx>;
> Varun Sethi <V.Sethi@xxxxxxx>; herbert@xxxxxxxxxxxxxxxxxxx;
> davem@xxxxxxxxxxxxx; Iuliana Prodan <iuliana.prodan@xxxxxxx>; linux-
> crypto@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; dl-linux-imx <linux-
> imx@xxxxxxx>
> Cc: Pankaj Gupta <pankaj.gupta@xxxxxxx>
> Subject: [PATCH v2] caam: init-clk based on caam-page0-access
>
> CAAM clock initialization to be done based on, soc specific info stored in struct
> caam_imx_data:
> - caam-page0-access flag
> - num_clks
>
> Signed-off-by: Pankaj Gupta <pankaj.gupta@xxxxxxx>
> ---
> v2:
> - Considering the OPTEE enablement check too, for setting the
> variable 'reg_access'.
>
> drivers/crypto/caam/ctrl.c | 25 +++++++++++++++++++++++--
> 1 file changed, 23 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c index
> bdf367f3f679..355ff92f4549 100644
> --- a/drivers/crypto/caam/ctrl.c
> +++ b/drivers/crypto/caam/ctrl.c
> @@ -512,6 +512,7 @@ static const struct of_device_id caam_match[] =
> { MODULE_DEVICE_TABLE(of, caam_match);
>
> struct caam_imx_data {
> + bool page0_access;
> const struct clk_bulk_data *clks;
> int num_clks;
> };
> @@ -524,6 +525,7 @@ static const struct clk_bulk_data caam_imx6_clks[] = { };
>
> static const struct caam_imx_data caam_imx6_data = {
> + .page0_access = true,
> .clks = caam_imx6_clks,
> .num_clks = ARRAY_SIZE(caam_imx6_clks), }; @@ -534,6 +536,7 @@
> static const struct clk_bulk_data caam_imx7_clks[] = { };
>
> static const struct caam_imx_data caam_imx7_data = {
> + .page0_access = true,
> .clks = caam_imx7_clks,
> .num_clks = ARRAY_SIZE(caam_imx7_clks), }; @@ -545,6 +548,7 @@
> static const struct clk_bulk_data caam_imx6ul_clks[] = { };
>
> static const struct caam_imx_data caam_imx6ul_data = {
> + .page0_access = true,
> .clks = caam_imx6ul_clks,
> .num_clks = ARRAY_SIZE(caam_imx6ul_clks), }; @@ -554,15 +558,23
> @@ static const struct clk_bulk_data caam_vf610_clks[] = { };
>
> static const struct caam_imx_data caam_vf610_data = {
> + .page0_access = true,
> .clks = caam_vf610_clks,
> .num_clks = ARRAY_SIZE(caam_vf610_clks), };
>
> +static const struct caam_imx_data caam_imx8ulp_data = {
> + .page0_access = false,
> + .clks = NULL,
> + .num_clks = 0,
> +};
> +
> static const struct soc_device_attribute caam_imx_soc_table[] = {
> { .soc_id = "i.MX6UL", .data = &caam_imx6ul_data },
> { .soc_id = "i.MX6*", .data = &caam_imx6_data },
> { .soc_id = "i.MX7*", .data = &caam_imx7_data },
> { .soc_id = "i.MX8M*", .data = &caam_imx7_data },
> + { .soc_id = "i.MX8ULP", .data = &caam_imx8ulp_data },
> { .soc_id = "VF*", .data = &caam_vf610_data },
> { .family = "Freescale i.MX" },
> { /* sentinel */ }
> @@ -860,6 +872,7 @@ static int caam_probe(struct platform_device *pdev)
> int pg_size;
> int BLOCK_OFFSET = 0;
> bool reg_access = true;
> + const struct caam_imx_data *imx_soc_data;
>
> ctrlpriv = devm_kzalloc(&pdev->dev, sizeof(*ctrlpriv), GFP_KERNEL);
> if (!ctrlpriv)
> @@ -889,7 +902,15 @@ static int caam_probe(struct platform_device *pdev)
>
> reg_access = !ctrlpriv->optee_en;
>
> - if (!imx_soc_match->data) {
> + if (imx_soc_match->data) {
> + imx_soc_data = imx_soc_match->data;
> + reg_access = reg_access && imx_soc_data-
> >page0_access;
> + /*
> + * CAAM clocks cannot be controlled from kernel.
> + */
> + if (!imx_soc_data->num_clks)
> + goto iomap_ctrl;
> + } else {
> dev_err(dev, "No clock data provided for i.MX SoC");
> return -EINVAL;
> }
> @@ -899,7 +920,7 @@ static int caam_probe(struct platform_device *pdev)
> return ret;
> }
>
> -
> +iomap_ctrl:
> /* Get configuration properties from device tree */
> /* First, get register page */
> ctrl = devm_of_iomap(dev, nprop, 0, NULL);
> --
> 2.34.1
