On Tue, Mar 30, 2021 at 08:26:43AM +0530, Viresh Kumar wrote:

On 24-03-21, 10:07, Rob Herring wrote:

quoted

On Fri, Mar 12, 2021 at 07:40:35PM +0800, Hector Yuan wrote:

quoted

From: "Hector.Yuan" <redacted>

Add devicetree bindings for MediaTek HW driver.

Signed-off-by: Hector.Yuan <redacted>
---
 .../bindings/cpufreq/cpufreq-mediatek-hw.yaml      |  127 ++++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml

diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml
new file mode 100644
index 0000000..0f3ad47
--- /dev/null
+++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-mediatek-hw.yaml

@@ -0,0 +1,127 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/cpufreq/cpufreq-mediatek-hw.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek's CPUFREQ Bindings
+
+maintainers:
+  - Hector Yuan <hector.yuan@mediatek.com>
+
+description:
+  CPUFREQ HW is a hardware engine used by MediaTek
+  SoCs to manage frequency in hardware. It is capable of controlling frequency
+  for multiple clusters.
+
+properties:
+  compatible:
+    const: mediatek,cpufreq-hw
+
+  reg:
+    minItems: 1
+    maxItems: 2
+    description: |
+      Addresses and sizes for the memory of the
+      HW bases in each frequency domain.
+
+  "#performance-domain-cells":

A common binding schema for this and 'performance-domains' needs to land 
first.

Sudeep, what happened to the series you had on this ? This patchset
has been blocked for a long time now, can we get that merged soonish
somehow ?

Sorry, it slipped through the cracks. I posted this as a fix for SCMI which
we fixed it later. This got de-prioritised in my todo list. Sorry for that.
I think main problem I had is to write a proper select statement in YAML
scheme to check the DT nodes when it is present. I couldn't get anything
similar for reference from clocks.

I had "select: false" which I knew was not acceptable as it can't go throw
dt_bindings_check. I am happy if someone wants to pick up and work on that
to push the change or provide suggestions that I can try out. I am unable
to spend more time trying to understand whole YAML schema ATM.

-- 
Regards,
Sudeep