* [PATCH v3 0/2] irqchip/ti-sci-inta: Support for unmapped events
@ 2020-10-20 7:32 Peter Ujfalusi
2020-10-20 7:32 ` [PATCH v3 1/2] dt-bindings: irqchip: ti,sci-inta: Update for unmapped event handling Peter Ujfalusi
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Peter Ujfalusi @ 2020-10-20 7:32 UTC (permalink / raw)
To: nm, t-kristo, ssantosh, tglx, jason, maz, robh+dt, lokeshvutla
Cc: linux-arm-kernel, linux-kernel, devicetree
Hi,
Changes since v2:
- Extended the block diagram of INTA in the DT documentation
- Use less creative variable names for unmapped events in the driver
- Short comment section to describe the unmapped event handling in driver
- Use u16 array to store the TI-SCI device identifiers instead of u32
- Use printk format specifier instead of_node_full_name
Changes since v1:
- Reviewed-by added to the first patch from Rob
- return 0 if ti,unmapped-event-sources is not present in DT
The version of INTA within DMSS (in AM64) changed how the events from the DMAs
are handled and how sysfw is presenting these events to be used for interrupts.
The DMA related events are directly mapped within INTA as unmapped events in
contrast to previous devices with NAVSS where the events were tied to their
source devices (UDMAP, ringacc).
This series adds support for handling the new version of INTA by introducing a
new property: ti,unmapped-event-sources which should hold a list of phandles
pointing to the sources of these unmapped events.
Regards,
Peter
---
Peter Ujfalusi (2):
dt-bindings: irqchip: ti,sci-inta: Update for unmapped event handling
irqchip/ti-sci-inta: Add support for unmapped event handling
.../interrupt-controller/ti,sci-inta.yaml | 10 +++
drivers/irqchip/irq-ti-sci-inta.c | 83 ++++++++++++++++++-
2 files changed, 90 insertions(+), 3 deletions(-)
--
Peter
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH v3 1/2] dt-bindings: irqchip: ti,sci-inta: Update for unmapped event handling
2020-10-20 7:32 [PATCH v3 0/2] irqchip/ti-sci-inta: Support for unmapped events Peter Ujfalusi
@ 2020-10-20 7:32 ` Peter Ujfalusi
2020-11-01 17:00 ` [tip: irq/urgent] dt-bindings: irqchip: ti, sci-inta: " tip-bot2 for Peter Ujfalusi
2020-10-20 7:32 ` [PATCH v3 2/2] irqchip/ti-sci-inta: Add support " Peter Ujfalusi
2020-11-01 12:10 ` [PATCH v3 0/2] irqchip/ti-sci-inta: Support for unmapped events Marc Zyngier
2 siblings, 1 reply; 6+ messages in thread
From: Peter Ujfalusi @ 2020-10-20 7:32 UTC (permalink / raw)
To: nm, t-kristo, ssantosh, tglx, jason, maz, robh+dt, lokeshvutla
Cc: linux-arm-kernel, linux-kernel, devicetree
The new DMA architecture introduced with AM64 introduced new event types:
unampped events.
These events are mapped within INTA in contrast to other K3 devices where
the events with similar function was originating from the UDMAP or ringacc.
The ti,unmapped-event-sources should contain phandle array to the devices
in the system (typically DMA controllers) from where the unmapped events
originate.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
.../bindings/interrupt-controller/ti,sci-inta.yaml | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.yaml b/Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.yaml
index c7cd05656a3e..cc795498488f 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.yaml
@@ -32,6 +32,11 @@ description: |
| | vint | bit | | 0 |.....|63| vintx |
| +--------------+ +------------+ |
| |
+ | Unmap |
+ | +--------------+ |
+ Unmapped events ----->| | umapidx |-------------------------> Globalevents
+ | +--------------+ |
+ | |
+-----------------------------------------+
Configuration of these Intmap registers that maps global events to vint is
@@ -70,6 +75,11 @@ properties:
- description: |
"limit" specifies the limit for translation
+ ti,unmapped-event-sources:
+ $ref: /schemas/types.yaml#definitions/phandle-array
+ description:
+ Array of phandles to DMA controllers where the unmapped events originate.
+
required:
- compatible
- reg
--
Peter
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH v3 2/2] irqchip/ti-sci-inta: Add support for unmapped event handling
2020-10-20 7:32 [PATCH v3 0/2] irqchip/ti-sci-inta: Support for unmapped events Peter Ujfalusi
2020-10-20 7:32 ` [PATCH v3 1/2] dt-bindings: irqchip: ti,sci-inta: Update for unmapped event handling Peter Ujfalusi
@ 2020-10-20 7:32 ` Peter Ujfalusi
2020-11-01 17:00 ` [tip: irq/urgent] " tip-bot2 for Peter Ujfalusi
2020-11-01 12:10 ` [PATCH v3 0/2] irqchip/ti-sci-inta: Support for unmapped events Marc Zyngier
2 siblings, 1 reply; 6+ messages in thread
From: Peter Ujfalusi @ 2020-10-20 7:32 UTC (permalink / raw)
To: nm, t-kristo, ssantosh, tglx, jason, maz, robh+dt, lokeshvutla
Cc: linux-arm-kernel, linux-kernel, devicetree
The DMA (BCDMA/PKTDMA and their rings/flows) events are under the INTA's
supervision as unmapped events in AM64.
In order to keep the current SW stack working, the INTA driver must replace
the dev_id with it's own when a request comes for BCDMA or PKTDMA
resources.
Implement parsing of the optional "ti,unmapped-event-sources" phandle array
to get the sci-dev-ids of the devices where the unmapped events originate.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
---
drivers/irqchip/irq-ti-sci-inta.c | 83 +++++++++++++++++++++++++++++--
1 file changed, 80 insertions(+), 3 deletions(-)
diff --git a/drivers/irqchip/irq-ti-sci-inta.c b/drivers/irqchip/irq-ti-sci-inta.c
index e0cceb81c648..b2ab8db439d9 100644
--- a/drivers/irqchip/irq-ti-sci-inta.c
+++ b/drivers/irqchip/irq-ti-sci-inta.c
@@ -85,6 +85,17 @@ struct ti_sci_inta_vint_desc {
* @base: Base address of the memory mapped IO registers
* @pdev: Pointer to platform device.
* @ti_sci_id: TI-SCI device identifier
+ * @unmapped_cnt: Number of @unmapped_dev_ids entries
+ * @unmapped_dev_ids: Pointer to an array of TI-SCI device identifiers of
+ * unmapped event sources.
+ * Unmapped Events are not part of the Global Event Map and
+ * they are converted to Global event within INTA to be
+ * received by the same INTA to generate an interrupt.
+ * In case an interrupt request comes for a device which is
+ * generating Unmapped Event, we must use the INTA's TI-SCI
+ * device identifier in place of the source device
+ * identifier to let sysfw know where it has to program the
+ * Global Event number.
*/
struct ti_sci_inta_irq_domain {
const struct ti_sci_handle *sci;
@@ -96,11 +107,37 @@ struct ti_sci_inta_irq_domain {
void __iomem *base;
struct platform_device *pdev;
u32 ti_sci_id;
+
+ int unmapped_cnt;
+ u16 *unmapped_dev_ids;
};
#define to_vint_desc(e, i) container_of(e, struct ti_sci_inta_vint_desc, \
events[i])
+static u16 ti_sci_inta_get_dev_id(struct ti_sci_inta_irq_domain *inta, u32 hwirq)
+{
+ u16 dev_id = HWIRQ_TO_DEVID(hwirq);
+ int i;
+
+ if (inta->unmapped_cnt == 0)
+ return dev_id;
+
+ /*
+ * For devices sending Unmapped Events we must use the INTA's TI-SCI
+ * device identifier number to be able to convert it to a Global Event
+ * and map it to an interrupt.
+ */
+ for (i = 0; i < inta->unmapped_cnt; i++) {
+ if (dev_id == inta->unmapped_dev_ids[i]) {
+ dev_id = inta->ti_sci_id;
+ break;
+ }
+ }
+
+ return dev_id;
+}
+
/**
* ti_sci_inta_irq_handler() - Chained IRQ handler for the vint irqs
* @desc: Pointer to irq_desc corresponding to the irq
@@ -251,7 +288,7 @@ static struct ti_sci_inta_event_desc *ti_sci_inta_alloc_event(struct ti_sci_inta
u16 dev_id, dev_index;
int err;
- dev_id = HWIRQ_TO_DEVID(hwirq);
+ dev_id = ti_sci_inta_get_dev_id(inta, hwirq);
dev_index = HWIRQ_TO_IRQID(hwirq);
event_desc = &vint_desc->events[free_bit];
@@ -352,14 +389,15 @@ static void ti_sci_inta_free_irq(struct ti_sci_inta_event_desc *event_desc,
{
struct ti_sci_inta_vint_desc *vint_desc;
struct ti_sci_inta_irq_domain *inta;
+ u16 dev_id;
vint_desc = to_vint_desc(event_desc, event_desc->vint_bit);
inta = vint_desc->domain->host_data;
+ dev_id = ti_sci_inta_get_dev_id(inta, hwirq);
/* free event irq */
mutex_lock(&inta->vint_mutex);
inta->sci->ops.rm_irq_ops.free_event_map(inta->sci,
- HWIRQ_TO_DEVID(hwirq),
- HWIRQ_TO_IRQID(hwirq),
+ dev_id, HWIRQ_TO_IRQID(hwirq),
inta->ti_sci_id,
vint_desc->vint_id,
event_desc->global_event,
@@ -574,6 +612,41 @@ static struct msi_domain_info ti_sci_inta_msi_domain_info = {
.chip = &ti_sci_inta_msi_irq_chip,
};
+static int ti_sci_inta_get_unmapped_sources(struct ti_sci_inta_irq_domain *inta)
+{
+ struct device *dev = &inta->pdev->dev;
+ struct device_node *node = dev_of_node(dev);
+ struct of_phandle_iterator it;
+ int count, err, ret, i;
+
+ count = of_count_phandle_with_args(node, "ti,unmapped-event-sources", NULL);
+ if (count <= 0)
+ return 0;
+
+ inta->unmapped_dev_ids = devm_kcalloc(dev, count,
+ sizeof(*inta->unmapped_dev_ids),
+ GFP_KERNEL);
+ if (!inta->unmapped_dev_ids)
+ return -ENOMEM;
+
+ i = 0;
+ of_for_each_phandle(&it, err, node, "ti,unmapped-event-sources", NULL, 0) {
+ u32 dev_id;
+
+ ret = of_property_read_u32(it.node, "ti,sci-dev-id", &dev_id);
+ if (ret) {
+ dev_err(dev, "ti,sci-dev-id read failure for %pOFf\n", it.node);
+ of_node_put(it.node);
+ return ret;
+ }
+ inta->unmapped_dev_ids[i++] = dev_id;
+ }
+
+ inta->unmapped_cnt = count;
+
+ return 0;
+}
+
static int ti_sci_inta_irq_domain_probe(struct platform_device *pdev)
{
struct irq_domain *parent_domain, *domain, *msi_domain;
@@ -629,6 +702,10 @@ static int ti_sci_inta_irq_domain_probe(struct platform_device *pdev)
if (IS_ERR(inta->base))
return PTR_ERR(inta->base);
+ ret = ti_sci_inta_get_unmapped_sources(inta);
+ if (ret)
+ return ret;
+
domain = irq_domain_add_linear(dev_of_node(dev),
ti_sci_get_num_resources(inta->vint),
&ti_sci_inta_irq_domain_ops, inta);
--
Peter
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [PATCH v3 0/2] irqchip/ti-sci-inta: Support for unmapped events
2020-10-20 7:32 [PATCH v3 0/2] irqchip/ti-sci-inta: Support for unmapped events Peter Ujfalusi
2020-10-20 7:32 ` [PATCH v3 1/2] dt-bindings: irqchip: ti,sci-inta: Update for unmapped event handling Peter Ujfalusi
2020-10-20 7:32 ` [PATCH v3 2/2] irqchip/ti-sci-inta: Add support " Peter Ujfalusi
@ 2020-11-01 12:10 ` Marc Zyngier
2 siblings, 0 replies; 6+ messages in thread
From: Marc Zyngier @ 2020-11-01 12:10 UTC (permalink / raw)
To: Thomas Gleixner, Jason Cooper, Geert Uytterhoeven, nm, t-kristo,
lokeshvutla, ssantosh, robh+dt, Peter Ujfalusi
Cc: Ulrich Hecht, linux-kernel, linux-renesas-soc, devicetree,
linux-arm-kernel
On Tue, 20 Oct 2020 10:32:41 +0300, Peter Ujfalusi wrote:
> Changes since v2:
> - Extended the block diagram of INTA in the DT documentation
> - Use less creative variable names for unmapped events in the driver
> - Short comment section to describe the unmapped event handling in driver
> - Use u16 array to store the TI-SCI device identifiers instead of u32
> - Use printk format specifier instead of_node_full_name
>
> [...]
Applied to irq/irqchip-next, thanks!
[1/2] dt-bindings: irqchip: ti, sci-inta: Update for unmapped event handling
commit: bb2bd7c7f3d0946acc2104db31df228d10f7b598
[2/2] irqchip/ti-sci-inta: Add support for unmapped event handling
commit: d95bdca75b3fb41bf185efe164e05aed820081a5
Cheers,
M.
--
Without deviation from the norm, progress is not possible.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [tip: irq/urgent] irqchip/ti-sci-inta: Add support for unmapped event handling
2020-10-20 7:32 ` [PATCH v3 2/2] irqchip/ti-sci-inta: Add support " Peter Ujfalusi
@ 2020-11-01 17:00 ` tip-bot2 for Peter Ujfalusi
0 siblings, 0 replies; 6+ messages in thread
From: tip-bot2 for Peter Ujfalusi @ 2020-11-01 17:00 UTC (permalink / raw)
To: linux-tip-commits; +Cc: Peter Ujfalusi, Marc Zyngier, x86, LKML
The following commit has been merged into the irq/urgent branch of tip:
Commit-ID: d95bdca75b3fb41bf185efe164e05aed820081a5
Gitweb: https://git.kernel.org/tip/d95bdca75b3fb41bf185efe164e05aed820081a5
Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
AuthorDate: Tue, 20 Oct 2020 10:32:43 +03:00
Committer: Marc Zyngier <maz@kernel.org>
CommitterDate: Sun, 01 Nov 2020 12:00:50
irqchip/ti-sci-inta: Add support for unmapped event handling
The DMA (BCDMA/PKTDMA and their rings/flows) events are under the INTA's
supervision as unmapped events in AM64.
In order to keep the current SW stack working, the INTA driver must replace
the dev_id with it's own when a request comes for BCDMA or PKTDMA
resources.
Implement parsing of the optional "ti,unmapped-event-sources" phandle array
to get the sci-dev-ids of the devices where the unmapped events originate.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20201020073243.19255-3-peter.ujfalusi@ti.com
---
drivers/irqchip/irq-ti-sci-inta.c | 83 ++++++++++++++++++++++++++++--
1 file changed, 80 insertions(+), 3 deletions(-)
diff --git a/drivers/irqchip/irq-ti-sci-inta.c b/drivers/irqchip/irq-ti-sci-inta.c
index e0cceb8..b2ab8db 100644
--- a/drivers/irqchip/irq-ti-sci-inta.c
+++ b/drivers/irqchip/irq-ti-sci-inta.c
@@ -85,6 +85,17 @@ struct ti_sci_inta_vint_desc {
* @base: Base address of the memory mapped IO registers
* @pdev: Pointer to platform device.
* @ti_sci_id: TI-SCI device identifier
+ * @unmapped_cnt: Number of @unmapped_dev_ids entries
+ * @unmapped_dev_ids: Pointer to an array of TI-SCI device identifiers of
+ * unmapped event sources.
+ * Unmapped Events are not part of the Global Event Map and
+ * they are converted to Global event within INTA to be
+ * received by the same INTA to generate an interrupt.
+ * In case an interrupt request comes for a device which is
+ * generating Unmapped Event, we must use the INTA's TI-SCI
+ * device identifier in place of the source device
+ * identifier to let sysfw know where it has to program the
+ * Global Event number.
*/
struct ti_sci_inta_irq_domain {
const struct ti_sci_handle *sci;
@@ -96,11 +107,37 @@ struct ti_sci_inta_irq_domain {
void __iomem *base;
struct platform_device *pdev;
u32 ti_sci_id;
+
+ int unmapped_cnt;
+ u16 *unmapped_dev_ids;
};
#define to_vint_desc(e, i) container_of(e, struct ti_sci_inta_vint_desc, \
events[i])
+static u16 ti_sci_inta_get_dev_id(struct ti_sci_inta_irq_domain *inta, u32 hwirq)
+{
+ u16 dev_id = HWIRQ_TO_DEVID(hwirq);
+ int i;
+
+ if (inta->unmapped_cnt == 0)
+ return dev_id;
+
+ /*
+ * For devices sending Unmapped Events we must use the INTA's TI-SCI
+ * device identifier number to be able to convert it to a Global Event
+ * and map it to an interrupt.
+ */
+ for (i = 0; i < inta->unmapped_cnt; i++) {
+ if (dev_id == inta->unmapped_dev_ids[i]) {
+ dev_id = inta->ti_sci_id;
+ break;
+ }
+ }
+
+ return dev_id;
+}
+
/**
* ti_sci_inta_irq_handler() - Chained IRQ handler for the vint irqs
* @desc: Pointer to irq_desc corresponding to the irq
@@ -251,7 +288,7 @@ static struct ti_sci_inta_event_desc *ti_sci_inta_alloc_event(struct ti_sci_inta
u16 dev_id, dev_index;
int err;
- dev_id = HWIRQ_TO_DEVID(hwirq);
+ dev_id = ti_sci_inta_get_dev_id(inta, hwirq);
dev_index = HWIRQ_TO_IRQID(hwirq);
event_desc = &vint_desc->events[free_bit];
@@ -352,14 +389,15 @@ static void ti_sci_inta_free_irq(struct ti_sci_inta_event_desc *event_desc,
{
struct ti_sci_inta_vint_desc *vint_desc;
struct ti_sci_inta_irq_domain *inta;
+ u16 dev_id;
vint_desc = to_vint_desc(event_desc, event_desc->vint_bit);
inta = vint_desc->domain->host_data;
+ dev_id = ti_sci_inta_get_dev_id(inta, hwirq);
/* free event irq */
mutex_lock(&inta->vint_mutex);
inta->sci->ops.rm_irq_ops.free_event_map(inta->sci,
- HWIRQ_TO_DEVID(hwirq),
- HWIRQ_TO_IRQID(hwirq),
+ dev_id, HWIRQ_TO_IRQID(hwirq),
inta->ti_sci_id,
vint_desc->vint_id,
event_desc->global_event,
@@ -574,6 +612,41 @@ static struct msi_domain_info ti_sci_inta_msi_domain_info = {
.chip = &ti_sci_inta_msi_irq_chip,
};
+static int ti_sci_inta_get_unmapped_sources(struct ti_sci_inta_irq_domain *inta)
+{
+ struct device *dev = &inta->pdev->dev;
+ struct device_node *node = dev_of_node(dev);
+ struct of_phandle_iterator it;
+ int count, err, ret, i;
+
+ count = of_count_phandle_with_args(node, "ti,unmapped-event-sources", NULL);
+ if (count <= 0)
+ return 0;
+
+ inta->unmapped_dev_ids = devm_kcalloc(dev, count,
+ sizeof(*inta->unmapped_dev_ids),
+ GFP_KERNEL);
+ if (!inta->unmapped_dev_ids)
+ return -ENOMEM;
+
+ i = 0;
+ of_for_each_phandle(&it, err, node, "ti,unmapped-event-sources", NULL, 0) {
+ u32 dev_id;
+
+ ret = of_property_read_u32(it.node, "ti,sci-dev-id", &dev_id);
+ if (ret) {
+ dev_err(dev, "ti,sci-dev-id read failure for %pOFf\n", it.node);
+ of_node_put(it.node);
+ return ret;
+ }
+ inta->unmapped_dev_ids[i++] = dev_id;
+ }
+
+ inta->unmapped_cnt = count;
+
+ return 0;
+}
+
static int ti_sci_inta_irq_domain_probe(struct platform_device *pdev)
{
struct irq_domain *parent_domain, *domain, *msi_domain;
@@ -629,6 +702,10 @@ static int ti_sci_inta_irq_domain_probe(struct platform_device *pdev)
if (IS_ERR(inta->base))
return PTR_ERR(inta->base);
+ ret = ti_sci_inta_get_unmapped_sources(inta);
+ if (ret)
+ return ret;
+
domain = irq_domain_add_linear(dev_of_node(dev),
ti_sci_get_num_resources(inta->vint),
&ti_sci_inta_irq_domain_ops, inta);
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [tip: irq/urgent] dt-bindings: irqchip: ti, sci-inta: Update for unmapped event handling
2020-10-20 7:32 ` [PATCH v3 1/2] dt-bindings: irqchip: ti,sci-inta: Update for unmapped event handling Peter Ujfalusi
@ 2020-11-01 17:00 ` tip-bot2 for Peter Ujfalusi
0 siblings, 0 replies; 6+ messages in thread
From: tip-bot2 for Peter Ujfalusi @ 2020-11-01 17:00 UTC (permalink / raw)
To: linux-tip-commits; +Cc: Peter Ujfalusi, Marc Zyngier, Rob Herring, x86, LKML
The following commit has been merged into the irq/urgent branch of tip:
Commit-ID: bb2bd7c7f3d0946acc2104db31df228d10f7b598
Gitweb: https://git.kernel.org/tip/bb2bd7c7f3d0946acc2104db31df228d10f7b598
Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
AuthorDate: Tue, 20 Oct 2020 10:32:42 +03:00
Committer: Marc Zyngier <maz@kernel.org>
CommitterDate: Sun, 01 Nov 2020 12:00:50
dt-bindings: irqchip: ti, sci-inta: Update for unmapped event handling
The new DMA architecture introduced with AM64 introduced new event types:
unampped events.
These events are mapped within INTA in contrast to other K3 devices where
the events with similar function was originating from the UDMAP or ringacc.
The ti,unmapped-event-sources should contain phandle array to the devices
in the system (typically DMA controllers) from where the unmapped events
originate.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201020073243.19255-2-peter.ujfalusi@ti.com
---
Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.yaml | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.yaml b/Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.yaml
index c7cd056..cc79549 100644
--- a/Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.yaml
+++ b/Documentation/devicetree/bindings/interrupt-controller/ti,sci-inta.yaml
@@ -32,6 +32,11 @@ description: |
| | vint | bit | | 0 |.....|63| vintx |
| +--------------+ +------------+ |
| |
+ | Unmap |
+ | +--------------+ |
+ Unmapped events ----->| | umapidx |-------------------------> Globalevents
+ | +--------------+ |
+ | |
+-----------------------------------------+
Configuration of these Intmap registers that maps global events to vint is
@@ -70,6 +75,11 @@ properties:
- description: |
"limit" specifies the limit for translation
+ ti,unmapped-event-sources:
+ $ref: /schemas/types.yaml#definitions/phandle-array
+ description:
+ Array of phandles to DMA controllers where the unmapped events originate.
+
required:
- compatible
- reg
^ permalink raw reply related [flat|nested] 6+ messages in thread
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2020-11-01 12:10 ` [PATCH v3 0/2] irqchip/ti-sci-inta: Support for unmapped events Marc Zyngier
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