Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1510678 > unrolled thread
| Started by | Markus Mayer <code@mmayer.net> |
|---|---|
| First post | 2016-10-27 23:20 +0200 |
| Last post | 2016-10-31 17:40 +0100 |
| Articles | 3 — 3 participants |
Back to article view | Back to linux.kernel
This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by
below is the oldest one visible, not the original post.
[PATCH v5 1/3] dt: cpufreq: brcm: New binding document for brcmstb-avs-cpufreq Markus Mayer <code@mmayer.net> - 2016-10-27 23:20 +0200
Re: [PATCH v5 1/3] dt: cpufreq: brcm: New binding document for brcmstb-avs-cpufreq Rob Herring <robh@kernel.org> - 2016-10-31 06:50 +0100
Re: [PATCH v5 1/3] dt: cpufreq: brcm: New binding document for brcmstb-avs-cpufreq Markus Mayer <markus.mayer@broadcom.com> - 2016-10-31 17:40 +0100
| From | Markus Mayer <code@mmayer.net> |
|---|---|
| Date | 2016-10-27 23:20 +0200 |
| Subject | [PATCH v5 1/3] dt: cpufreq: brcm: New binding document for brcmstb-avs-cpufreq |
| Message-ID | <sx0fD-7cB-9@gated-at.bofh.it> |
From: Markus Mayer <mmayer@broadcom.com>
Add the binding document for the new brcmstb-avs-cpufreq driver.
Signed-off-by: Markus Mayer <mmayer@broadcom.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
---
.../bindings/cpufreq/brcm,stb-avs-cpu-freq.txt | 78 ++++++++++++++++++++++
MAINTAINERS | 7 ++
2 files changed, 85 insertions(+)
create mode 100644 Documentation/devicetree/bindings/cpufreq/brcm,stb-avs-cpu-freq.txt
diff --git a/Documentation/devicetree/bindings/cpufreq/brcm,stb-avs-cpu-freq.txt b/Documentation/devicetree/bindings/cpufreq/brcm,stb-avs-cpu-freq.txt
new file mode 100644
index 0000000..af23857
--- /dev/null
+++ b/Documentation/devicetree/bindings/cpufreq/brcm,stb-avs-cpu-freq.txt
@@ -0,0 +1,78 @@
+Broadcom AVS mail box and interrupt register bindings
+=====================================================
+
+A total of three DT nodes are required. One node (brcm,avs-cpu-data-mem)
+references the mailbox register used to communicate with the AVS CPU[1]. The
+second node (brcm,avs-cpu-l2-intr) is required to trigger an interrupt on
+the AVS CPU. The interrupt tells the AVS CPU that it needs to process a
+command sent to it by a driver. Interrupting the AVS CPU is mandatory for
+commands to be processed.
+
+The interface also requires a reference to the AVS host interrupt controller,
+so a driver can react to interrupts generated by the AVS CPU whenever a command
+has been processed. See [2] for more information on the brcm,l2-intc node.
+
+[1] The AVS CPU is an independent co-processor that runs proprietary
+firmware. On some SoCs, this firmware supports DFS and DVFS in addition to
+Adaptive Voltage Scaling.
+
+[2] Documentation/devicetree/bindings/interrupt-controller/brcm,l2-intc.txt
+
+
+Node brcm,avs-cpu-data-mem
+--------------------------
+
+Required properties:
+- compatible: must include: brcm,avs-cpu-data-mem and
+ should include: one of brcm,bcm7271-avs-cpu-data-mem or
+ brcm,bcm7268-avs-cpu-data-mem
+- reg: Specifies base physical address and size of the registers.
+- interrupts: The interrupt that the AVS CPU will use to interrupt the host
+ when a command completed.
+- interrupt-parent: The interrupt controller the above interrupt is routed
+ through.
+- interrupt-names: The name of the interrupt used to interrupt the host.
+
+Optional properties:
+- None
+
+Node brcm,avs-cpu-l2-intr
+-------------------------
+
+Required properties:
+- compatible: must include: brcm,avs-cpu-l2-intr and
+ should include: one of brcm,bcm7271-avs-cpu-l2-intr or
+ brcm,bcm7268-avs-cpu-l2-intr
+- reg: Specifies base physical address and size of the registers.
+
+Optional properties:
+- None
+
+
+Example
+=======
+
+ avs_host_l2_intc: interrupt-controller@f04d1200 {
+ #interrupt-cells = <1>;
+ compatible = "brcm,l2-intc";
+ interrupt-parent = <&intc>;
+ reg = <0xf04d1200 0x48>;
+ interrupt-controller;
+ interrupts = <0x0 0x19 0x0>;
+ interrupt-names = "avs";
+ };
+
+ avs-cpu-data-mem@f04c4000 {
+ compatible = "brcm,bcm7271-avs-cpu-data-mem",
+ "brcm,avs-cpu-data-mem";
+ reg = <0xf04c4000 0x60>;
+ interrupts = <0x1a>;
+ interrupt-parent = <&avs_host_l2_intc>;
+ interrupt-names = "sw_intr";
+ };
+
+ avs-cpu-l2-intr@f04d1100 {
+ compatible = "brcm,bcm7271-avs-cpu-l2-intr",
+ "brcm,avs-cpu-l2-intr";
+ reg = <0xf04d1100 0x10>;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 1cd38a7..9379aca 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2738,6 +2738,13 @@ L: bcm-kernel-feedback-list@broadcom.com
S: Maintained
F: drivers/mtd/nand/brcmnand/
+BROADCOM STB AVS CPUFREQ DRIVER
+M: Markus Mayer <mmayer@broadcom.com>
+M: bcm-kernel-feedback-list@broadcom.com
+L: linux-pm@vger.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/cpufreq/brcm,stb-avs-cpu-freq.txt
+
BROADCOM SPECIFIC AMBA DRIVER (BCMA)
M: Rafał Miłecki <zajec5@gmail.com>
L: linux-wireless@vger.kernel.org
--
2.7.4
[toc] | [next] | [standalone]
| From | Rob Herring <robh@kernel.org> |
|---|---|
| Date | 2016-10-31 06:50 +0100 |
| Subject | Re: [PATCH v5 1/3] dt: cpufreq: brcm: New binding document for brcmstb-avs-cpufreq |
| Message-ID | <sydDQ-6BQ-13@gated-at.bofh.it> |
| In reply to | #1510678 |
On Thu, Oct 27, 2016 at 02:05:34PM -0700, Markus Mayer wrote: > From: Markus Mayer <mmayer@broadcom.com> > > Add the binding document for the new brcmstb-avs-cpufreq driver. > > Signed-off-by: Markus Mayer <mmayer@broadcom.com> > Acked-by: Viresh Kumar <viresh.kumar@linaro.org> > --- > .../bindings/cpufreq/brcm,stb-avs-cpu-freq.txt | 78 ++++++++++++++++++++++ > MAINTAINERS | 7 ++ > 2 files changed, 85 insertions(+) > create mode 100644 Documentation/devicetree/bindings/cpufreq/brcm,stb-avs-cpu-freq.txt I guess if one of the nodes is used elsewhere, combining the nodes doesn't make sense. So: Acked-by: Rob Herring <robh@kernel.org>
[toc] | [prev] | [next] | [standalone]
| From | Markus Mayer <markus.mayer@broadcom.com> |
|---|---|
| Date | 2016-10-31 17:40 +0100 |
| Message-ID | <synMR-4SB-29@gated-at.bofh.it> |
| In reply to | #1512337 |
On 30 October 2016 at 22:43, Rob Herring <robh@kernel.org> wrote: > On Thu, Oct 27, 2016 at 02:05:34PM -0700, Markus Mayer wrote: >> From: Markus Mayer <mmayer@broadcom.com> >> >> Add the binding document for the new brcmstb-avs-cpufreq driver. >> >> Signed-off-by: Markus Mayer <mmayer@broadcom.com> >> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> >> --- >> .../bindings/cpufreq/brcm,stb-avs-cpu-freq.txt | 78 ++++++++++++++++++++++ >> MAINTAINERS | 7 ++ >> 2 files changed, 85 insertions(+) >> create mode 100644 Documentation/devicetree/bindings/cpufreq/brcm,stb-avs-cpu-freq.txt > > I guess if one of the nodes is used elsewhere, combining the nodes > doesn't make sense. So: > > Acked-by: Rob Herring <robh@kernel.org> Thanks, Rob. The series, with Acks added, is also available here: https://github.com/mmayer/linux/tree/upstream-avs-cpufreq-4.9-v5 Regards, -Markus
[toc] | [prev] | [standalone]
Back to top | Article view | linux.kernel
csiph-web