The PRU-ICSS moduels has a SYSCONFIG register that is
similar to omap4-simple but with 2 speacial register bits.
Let's add a new type for that so we can deal with any
PRU-ICSS specific details if required.
Signed-off-by: Roger Quadros <rog...@ti.com>
---
.../devicetree/bindings/bus/ti-sysc.txt | 1 +
drivers/bus/ti-sysc.c | 21 +++++++++++++++++++
include/linux/platform_data/ti-sysc.h | 7 ++++++-
3 files changed, 28 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/bus/ti-sysc.txt
b/Documentation/devicetree/bindings/bus/ti-sysc.txt
index f200f45572ae..f9716c841ecd 100644
--- a/Documentation/devicetree/bindings/bus/ti-sysc.txt
+++ b/Documentation/devicetree/bindings/bus/ti-sysc.txt
@@ -38,6 +38,7 @@ Required standard properties:
"ti,sysc-dra7-mcasp"
"ti,sysc-usb-host-fs"
"ti,sysc-dra7-mcan"
+ "ti,sysc-pruss"
- reg shall have register areas implemented for the interconnect
target module in question such as revision, sysc and syss
diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index 1e63b6265764..e4ab4d422ea5 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -1993,6 +1993,26 @@ static const struct sysc_capabilities sysc_dra7_mcan = {
.regbits = &sysc_regbits_dra7_mcan,
};
+/*
+ * PRU-ICSS, similar to omap4-simple but has special bits
+ */
+static const struct sysc_regbits sysc_regbits_pruss = {
+ .dmadisable_shift = -ENODEV,
+ .midle_shift = 2,
+ .sidle_shift = 0,
+ .clkact_shift = -ENODEV,
+ .enwkup_shift = -ENODEV,
+ .srst_shift = -ENODEV,
+ .emufree_shift = -ENODEV,
+ .autoidle_shift = -ENODEV,
+ .standby_init_shift = 4,
+ .sub_mwait_shift = 5,
+};
+
+static const struct sysc_capabilities sysc_pruss = {
+ .type = TI_SYSC_PRUSS,
+ .regbits = &sysc_regbits_pruss,
+};
static int sysc_init_pdata(struct sysc *ddata)
{
struct ti_sysc_platform_data *pdata = dev_get_platdata(ddata->dev);
@@ -2186,6 +2206,7 @@ static const struct of_device_id sysc_match[] = {
{ .compatible = "ti,sysc-usb-host-fs",
.data = &sysc_omap4_usb_host_fs, },
{ .compatible = "ti,sysc-dra7-mcan", .data = &sysc_dra7_mcan, },
+ { .compatible = "ti,sysc-pruss", .data = &sysc_pruss, },
{ },
};
MODULE_DEVICE_TABLE(of, sysc_match);
diff --git a/include/linux/platform_data/ti-sysc.h
b/include/linux/platform_data/ti-sysc.h
index 9256c0305968..bb95ae7da56c 100644
--- a/include/linux/platform_data/ti-sysc.h
+++ b/include/linux/platform_data/ti-sysc.h
@@ -15,6 +15,7 @@ enum ti_sysc_module_type {
TI_SYSC_OMAP4_MCASP,
TI_SYSC_OMAP4_USB_HOST_FS,
TI_SYSC_DRA7_MCAN,
+ TI_SYSC_PRUSS,
};
struct ti_sysc_cookie {
@@ -30,7 +31,9 @@ struct ti_sysc_cookie {
* @srst_shift: Offset of the softreset bit
* @autoidle_shift: Offset of the autoidle bit
* @dmadisable_shift: Offset of the dmadisable bit
- * @emufree_shift; Offset of the emufree bit
+ * @emufree_shift: Offset of the emufree bit
+ * @standby_init_shift: Offset to standby_init bit
+ * @sub_mwait_shift: Offset to sub_mwait bit
*
* Note that 0 is a valid shift, and for ti-sysc.c -ENODEV can be used if a
* feature is not available.
@@ -44,6 +47,8 @@ struct sysc_regbits {
s8 autoidle_shift;
s8 dmadisable_shift;
s8 emufree_shift;
+ s8 standby_init_shift;
+ s8 sub_mwait_shift;
};
#define SYSC_QUIRK_SWSUP_MSTANDBY BIT(13)
--
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