CAAM clock initializat is done based on the basis of soc specific
info stored in struct caam_imx_data:
- caam-page0-access flag
- num_clks
CAAM driver needs to be aware of access rights to CAAM control page
i.e., page0, to do things differently.
Signed-off-by: Pankaj Gupta <[email protected]>
---
drivers/crypto/caam/ctrl.c | 18 ++++++++++++++++--
1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/caam/ctrl.c b/drivers/crypto/caam/ctrl.c
index bdf367f3f679..247d42aa32df 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),
};
@@ -554,6 +558,7 @@ 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),
};
@@ -860,6 +865,7 @@ 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)
@@ -889,17 +895,25 @@ static int caam_probe(struct platform_device *pdev)
reg_access = !ctrlpriv->optee_en;
- if (!imx_soc_match->data) {
+ if (imx_soc_match->data) {
dev_err(dev, "No clock data provided for i.MX SoC");
return -EINVAL;
}
+ 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;
+
ret = init_clocks(dev, imx_soc_match->data);
if (ret)
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