[PATCH v2 03/10] soc: ti: k3-navss-ringacc: Initialize base address of ring cfg registers

Chintan Vankar
2024-04-25T12:09:39Z

From: Kishon Vijay Abraham I <kishon@ti.com>

Initialize base address of ring config registers required to natively
setup ring cfg registers in the absence of Device Manager (DM) services
at R5 SPL stage.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: Chintan Vankar <c-vankar@ti.com>
---

Link to v1:
https://lore.kernel.org/r/20240112064759.1801600-4-s-vadapalli@ti.com/

Changes from v1 to v2:
- No changes.

drivers/soc/ti/k3-navss-ringacc.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/ti/k3-navss-ringacc.c b/drivers/soc/ti/k3-navss-ringacc.c
index ed39ff2fa4..0a96ed666c 100644
--- a/drivers/soc/ti/k3-navss-ringacc.c
+++ b/drivers/soc/ti/k3-navss-ringacc.c
@@ -1030,8 +1030,8 @@ static int k3_nav_ringacc_init(struct udevice *dev, struct k3_nav_ringacc *ringa
struct k3_nav_ringacc *k3_ringacc_dmarings_init(struct udevice *dev,
struct k3_ringacc_init_data *data)
{
+ void __iomem *base_rt, *base_cfg;
struct k3_nav_ringacc *ringacc;
- void __iomem *base_rt;
int i;

ringacc = devm_kzalloc(dev, sizeof(*ringacc), GFP_KERNEL);
@@ -1049,6 +1049,10 @@ struct k3_nav_ringacc *k3_ringacc_dmarings_init(struct udevice *dev,
if (!base_rt)
return ERR_PTR(-EINVAL);

+ base_cfg = dev_read_addr_name_ptr(dev, "cfg");
+ if (!base_cfg)
+ return ERR_PTR(-EINVAL);
+
ringacc->rings = devm_kzalloc(dev,
sizeof(*ringacc->rings) *
ringacc->num_rings * 2,
@@ -1063,6 +1067,7 @@ struct k3_nav_ringacc *k3_ringacc_dmarings_init(struct udevice *dev,
for (i = 0; i < ringacc->num_rings; i++) {
struct k3_nav_ring *ring = &ringacc->rings[i];

+ ring->cfg = base_cfg + KNAV_RINGACC_CFG_REGS_STEP * i;
ring->rt = base_rt + K3_DMARING_RING_RT_REGS_STEP * i;
ring->parent = ringacc;
ring->ring_id = i;
--
2.34.1