RE: [PATCH v7 1/2] dt-bindings: timer: Add bindings for Intel Keem Bay SoC Timer

-----Original Message-----
From: Rob Herring <robh@kernel.org>
Sent: Friday, September 17, 2021 1:30 AM
To: Sanil, Shruthi <redacted>
Cc: daniel.lezcano@linaro.org; tglx@linutronix.de; linux-
kernel@vger.kernel.org; devicetree@vger.kernel.org;
andriy.shevchenko@linux.intel.com; kris.pan@linux.intel.com;
mgross@linux.intel.com; Thokala, Srikanth [off-list ref];
Raja Subramanian, Lakshmi Bai [off-list ref];
Sangannavar, Mallikarjunappa [off-list ref]
Subject: Re: [PATCH v7 1/2] dt-bindings: timer: Add bindings for Intel Keem
Bay SoC Timer

On Mon, Sep 13, 2021 at 11:19:54PM +0530, shruthi.sanil@intel.com wrote:

quoted

From: Shruthi Sanil <redacted>

Add Device Tree bindings for the Timer IP, which can be used as
clocksource and clockevent device in the Intel Keem Bay SoC.

Reviewed-by: Andy Shevchenko <redacted>
Signed-off-by: Shruthi Sanil <redacted>
---
 .../bindings/timer/intel,keembay-timer.yaml   | 172 ++++++++++++++++++
 1 file changed, 172 insertions(+)
 create mode 100644
Documentation/devicetree/bindings/timer/intel,keembay-timer.yaml

diff --git
a/Documentation/devicetree/bindings/timer/intel,keembay-timer.yaml
b/Documentation/devicetree/bindings/timer/intel,keembay-timer.yaml
new file mode 100644
index 000000000000..80e7785845ac

--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/intel,keembay-

timer.yaml

quoted

@@ -0,0 +1,172 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2
+---
+$id: http://devicetree.org/schemas/timer/intel,keembay-timer.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intel Keem Bay SoC Timers
+
+maintainers:
+  - Shruthi Sanil <shruthi.sanil@intel.com>
+
+description: |
+  The Intel Keem Bay timer driver supports 1 free running counter and 8

timers.

quoted

+  Each timer is capable of generating inividual interrupt.
+  Both the features are enabled through the timer general config register.
+
+  The parent node represents the common general configuration details
+ and  the child nodes represents the counter and timers.
+
+properties:
+  compatible:
+    enum:
+      - simple-mfd

Removing is not the right solution. What you need is:

items:
  - const: intel,keembay-gpt-creg
  - const: simple-mfd

Thank You Rob! I'll update accordingly and submit the patch.

quoted

+
+  reg:
+    description: General configuration register address and length.
+    maxItems: 1
+
+  ranges: true
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+required:
+  - compatible
+  - reg
+  - ranges
+  - "#address-cells"
+  - "#size-cells"
+
+patternProperties:
+  "^counter@[0-9a-f]+$":
+    type: object
+    description: Properties for Intel Keem Bay counter
+
+    properties:
+      compatible:
+        enum:
+          - intel,keembay-counter
+
+      reg:
+        maxItems: 1
+
+      clocks:
+        maxItems: 1
+
+    required:
+      - compatible
+      - reg
+      - clocks
+
+  "^timer@[0-9a-f]+$":
+    type: object
+    description: Properties for Intel Keem Bay timer
+
+    properties:
+      compatible:
+        enum:
+          - intel,keembay-timer
+
+      reg:
+        maxItems: 1
+
+      interrupts:
+        maxItems: 1
+
+      clocks:
+        maxItems: 1
+
+    required:
+      - compatible
+      - reg
+      - interrupts
+      - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #define KEEM_BAY_A53_TIM
+
+    soc {
+        #address-cells = <0x2>;
+        #size-cells = <0x2>;
+
+        gpt@20331000 {
+            compatible = "simple-mfd";
+            reg = <0x0 0x20331000 0x0 0xc>;
+            ranges = <0x0 0x0 0x20330000 0xF0>;
+            #address-cells = <0x1>;
+            #size-cells = <0x1>;
+
+            counter@e8 {
+                compatible = "intel,keembay-counter";
+                reg = <0xe8 0x8>;
+                clocks = <&scmi_clk KEEM_BAY_A53_TIM>;
+            };
+
+            timer@10 {
+                compatible = "intel,keembay-timer";
+                reg = <0x10 0xc>;
+                interrupts = <GIC_SPI 0x3 IRQ_TYPE_LEVEL_HIGH>;
+                clocks = <&scmi_clk KEEM_BAY_A53_TIM>;
+            };
+
+            timer@20 {
+                compatible = "intel,keembay-timer";
+                reg = <0x20 0xc>;
+                interrupts = <GIC_SPI 0x4 IRQ_TYPE_LEVEL_HIGH>;
+                clocks = <&scmi_clk KEEM_BAY_A53_TIM>;
+            };
+
+            timer@30 {
+                compatible = "intel,keembay-timer";
+                reg = <0x30 0xc>;
+                interrupts = <GIC_SPI 0x5 IRQ_TYPE_LEVEL_HIGH>;
+                clocks = <&scmi_clk KEEM_BAY_A53_TIM>;
+            };
+
+            timer@40 {
+                compatible = "intel,keembay-timer";
+                reg = <0x40 0xc>;
+                interrupts = <GIC_SPI 0x6 IRQ_TYPE_LEVEL_HIGH>;
+                clocks = <&scmi_clk KEEM_BAY_A53_TIM>;
+            };
+
+            timer@50 {
+                compatible = "intel,keembay-timer";
+                reg = <0x50 0xc>;
+                interrupts = <GIC_SPI 0x7 IRQ_TYPE_LEVEL_HIGH>;
+                clocks = <&scmi_clk KEEM_BAY_A53_TIM>;
+            };
+
+            timer@60 {
+                compatible = "intel,keembay-timer";
+                reg = <0x60 0xc>;
+                interrupts = <GIC_SPI 0x8 IRQ_TYPE_LEVEL_HIGH>;
+                clocks = <&scmi_clk KEEM_BAY_A53_TIM>;
+            };
+
+            timer@70 {
+                compatible = "intel,keembay-timer";
+                reg = <0x70 0xc>;
+                interrupts = <GIC_SPI 0x9 IRQ_TYPE_LEVEL_HIGH>;
+                clocks = <&scmi_clk KEEM_BAY_A53_TIM>;
+            };
+
+            timer@80 {
+                compatible = "intel,keembay-timer";
+                reg = <0x80 0xc>;
+                interrupts = <GIC_SPI 0xa IRQ_TYPE_LEVEL_HIGH>;
+                clocks = <&scmi_clk KEEM_BAY_A53_TIM>;
+            };
+        };
+    };
+
+...
--
2.17.1