dt-bindings: clock: Convert imx7ulp clock to json-schema

Convert the i.MX7ULP clock binding to DT schema format using json-schema,
the original binding doc is actually for two clock modules(SCG and PCC),
so split it to two binding docs, and the MPLL(mipi PLL) is NOT supposed
to be in clock module, so remove it from binding doc as well.

Reviewed-by: Dong Aisheng <aisheng.dong@nxp.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Rob Herring <robh@kernel.org>

1 files changed, 99 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/clock/imx7ulp-scg-clock.yaml b/Documentation/devicetree/bindings/clock/imx7ulp-scg-clock.yaml
new file mode 100644
index 000000000000..ee8efb4ed599
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/imx7ulp-scg-clock.yaml
@@ -0,0 +1,99 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/imx7ulp-scg-clock.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Clock bindings for Freescale i.MX7ULP System Clock Generation (SCG) modules
+
+maintainers:
+  - A.s. Dong <aisheng.dong@nxp.com>
+
+description: |
+  i.MX7ULP Clock functions are under joint control of the System
+  Clock Generation (SCG) modules, Peripheral Clock Control (PCC)
+  modules, and Core Mode Controller (CMC)1 blocks
+
+  The clocking scheme provides clear separation between M4 domain
+  and A7 domain. Except for a few clock sources shared between two
+  domains, such as the System Oscillator clock, the Slow IRC (SIRC),
+  and and the Fast IRC clock (FIRCLK), clock sources and clock
+  management are separated and contained within each domain.
+
+  M4 clock management consists of SCG0, PCC0, PCC1, and CMC0 modules.
+  A7 clock management consists of SCG1, PCC2, PCC3, and CMC1 modules.
+
+  Note: this binding doc is only for A7 clock domain.
+
+  The System Clock Generation (SCG) is responsible for clock generation
+  and distribution across this device. Functions performed by the SCG
+  include: clock reference selection, generation of clock used to derive
+  processor, system, peripheral bus and external memory interface clocks,
+  source selection for peripheral clocks and control of power saving
+  clock gating mode.
+
+  The clock consumer should specify the desired clock by having the clock
+  ID in its "clocks" phandle cell.
+  See include/dt-bindings/clock/imx7ulp-clock.h for the full list of
+  i.MX7ULP clock IDs of each module.
+
+properties:
+  compatible:
+    const: fsl,imx7ulp-scg1
+
+  reg:
+    maxItems: 1
+
+  '#clock-cells':
+    const: 1
+
+  clocks:
+    items:
+      - description: rtc osc
+      - description: system osc
+      - description: slow internal reference clock
+      - description: fast internal reference clock
+      - description: usb PLL
+
+  clock-names:
+    items:
+      - const: rosc
+      - const: sosc
+      - const: sirc
+      - const: firc
+      - const: upll
+
+required:
+  - compatible
+  - reg
+  - '#clock-cells'
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/imx7ulp-clock.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    clock-controller@403e0000 {
+        compatible = "fsl,imx7ulp-scg1";
+        reg = <0x403e0000 0x10000>;
+        clocks = <&rosc>, <&sosc>, <&sirc>,
+                 <&firc>, <&upll>;
+        clock-names = "rosc", "sosc", "sirc",
+                      "firc", "upll";
+        #clock-cells = <1>;
+    };
+
+    mmc@40380000 {
+        compatible = "fsl,imx7ulp-usdhc";
+        reg = <0x40380000 0x10000>;
+        interrupts = <GIC_SPI 43 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&scg1 IMX7ULP_CLK_NIC1_BUS_DIV>,
+                 <&scg1 IMX7ULP_CLK_NIC1_DIV>,
+                 <&pcc2 IMX7ULP_CLK_USDHC1>;
+        clock-names ="ipg", "ahb", "per";
+        bus-width = <4>;
+    };