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reset: zynqmp: Add reset driver support for versal

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Add support for versal platform by adding "xlnx,versal-reset"
compatible string in zynqmp-reset driver. Reset numbering schema
for versal is not same as zynqmp, so nr_reset and reset_id are
set to zero. In case of assert/dessert, required device reset id
is sent from respective driver through struct reset_ctl.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@amd.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/20220720095959.29610-2-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
This commit is contained in:
T Karthik Reddy 2022-07-20 03:59:57 -06:00 committed by Michal Simek
parent 4a1bfcd7aa
commit 9df5081740
2 changed files with 10 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/reset/Kconfig
View File

@ -199,11 +199,11 @@ config RESET_SCMI
protocol communication with a SCMI server.
config RESET_ZYNQMP
bool "Reset Driver for Xilinx ZynqMP SoC's"
bool "Reset Driver for Xilinx ZynqMP & Versal SoC's"
depends on DM_RESET && ZYNQMP_FIRMWARE
help
Support for reset controller on Xilinx ZynqMP SoC. Driver is only
passing request via Xilinx firmware interface to TF-A and PMU
Support for reset controller on Xilinx ZynqMP & Versal SoC's. Driver
is only passing request via Xilinx firmware interface to TF-A and PMU
firmware.
config RESET_DRA7

10
drivers/reset/reset-zynqmp.c
View File

@ -53,7 +53,7 @@ static int zynqmp_reset_request(struct reset_ctl *rst)
dev_dbg(rst->dev, "%s(rst=%p) (id=%lu) (nr_reset=%d)\n", __func__,
rst, rst->id, priv->nr_reset);
if (rst->id > priv->nr_reset)
if (priv->nr_reset && rst->id > priv->nr_reset)
return -EINVAL;
return 0;
@ -63,8 +63,11 @@ static int zynqmp_reset_probe(struct udevice *dev)
{
struct zynqmp_reset_priv *priv = dev_get_priv(dev);
priv->reset_id = ZYNQMP_RESET_ID;
priv->nr_reset = ZYNQMP_NR_RESETS;
if (device_is_compatible(dev, "xlnx,zynqmp-reset")) {
priv->reset_id = ZYNQMP_RESET_ID;
priv->nr_reset = ZYNQMP_NR_RESETS;
}
return 0;
}
@ -76,6 +79,7 @@ const struct reset_ops zynqmp_reset_ops = {
static const struct udevice_id zynqmp_reset_ids[] = {
{ .compatible = "xlnx,zynqmp-reset" },
{ .compatible = "xlnx,versal-reset" },
{ }
};