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Message-ID: <ZVED01t3+coBd44x@standask-GA-A55M-S2HP>
Date: Sun, 12 Nov 2023 17:56:51 +0100
From: Stanislav Jakubek <stano.jakubek@...il.com>
To: Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Florian Fainelli <florian.fainelli@...adcom.com>,
Ray Jui <rjui@...adcom.com>,
Scott Branden <sbranden@...adcom.com>
Cc: bcm-kernel-feedback-list@...adcom.com, linux-clk@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
Artur Weber <aweber.kernel@...il.com>
Subject: [PATCH v3] dt-bindings: clock: brcm,kona-ccu: convert to YAML
Convert Broadcom Kona family clock controller unit (CCU) bindings
to DT schema.
Changes during conversion:
- remove "dmac" from clock-output-names for brcm,bcm11351-master-ccu,
such a clock doesn't exist
- remove "uartb4" from clock-output-names for brcm,bcm21664-slave-ccu,
such a clock doesn't exist
Signed-off-by: Stanislav Jakubek <stano.jakubek@...il.com>
Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>
---
Changes in V3:
- collect Conor's R-b
- changed reasoning for the removal of the 2 clocks to "such a clock doesn't
exist", as it better reflects the situation
- Link to V2: https://lore.kernel.org/lkml/ZTf0oWfOqnyMEKbF@standask-GA-A55M-S2HP/
Changes in V2:
- remove the table copied from the old txt bindings, replace it with if-then
blocks individually listing the allowed clock-output-names per compatible
- remove "dmac" from clock-output-names for brcm,bcm11351-master-ccu,
it is not used in DT nor the dt-bindings
- remove "uartb4" from clock-output-names for brcm,bcm21664-slave-ccu,
it is not used in DT nor the dt-bindings
- move allOf: after required:
- Link to V1: https://lore.kernel.org/lkml/ZTUIJrTc6KKyT4xj@standask-GA-A55M-S2HP/
.../bindings/clock/brcm,kona-ccu.txt | 138 -------------
.../bindings/clock/brcm,kona-ccu.yaml | 181 ++++++++++++++++++
2 files changed, 181 insertions(+), 138 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/clock/brcm,kona-ccu.txt
create mode 100644 Documentation/devicetree/bindings/clock/brcm,kona-ccu.yaml
diff --git a/Documentation/devicetree/bindings/clock/brcm,kona-ccu.txt b/Documentation/devicetree/bindings/clock/brcm,kona-ccu.txt
deleted file mode 100644
index 8e5a7d868557..000000000000
--- a/Documentation/devicetree/bindings/clock/brcm,kona-ccu.txt
+++ /dev/null
@@ -1,138 +0,0 @@
-Broadcom Kona Family Clocks
-
-This binding is associated with Broadcom SoCs having "Kona" style
-clock control units (CCUs). A CCU is a clock provider that manages
-a set of clock signals. Each CCU is represented by a node in the
-device tree.
-
-This binding uses the common clock binding:
- Documentation/devicetree/bindings/clock/clock-bindings.txt
-
-Required properties:
-- compatible
- Shall have a value of the form "brcm,<model>-<which>-ccu",
- where <model> is a Broadcom SoC model number and <which> is
- the name of a defined CCU. For example:
- "brcm,bcm11351-root-ccu"
- The compatible strings used for each supported SoC family
- are defined below.
-- reg
- Shall define the base and range of the address space
- containing clock control registers
-- #clock-cells
- Shall have value <1>. The permitted clock-specifier values
- are defined below.
-- clock-output-names
- Shall be an ordered list of strings defining the names of
- the clocks provided by the CCU.
-
-Device tree example:
-
- slave_ccu: slave_ccu {
- compatible = "brcm,bcm11351-slave-ccu";
- reg = <0x3e011000 0x0f00>;
- #clock-cells = <1>;
- clock-output-names = "uartb",
- "uartb2",
- "uartb3",
- "uartb4";
- };
-
- ref_crystal_clk: ref_crystal {
- #clock-cells = <0>;
- compatible = "fixed-clock";
- clock-frequency = <26000000>;
- };
-
- uart@...02000 {
- compatible = "brcm,bcm11351-dw-apb-uart", "snps,dw-apb-uart";
- reg = <0x3e002000 0x1000>;
- clocks = <&slave_ccu BCM281XX_SLAVE_CCU_UARTB3>;
- interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
- reg-shift = <2>;
- reg-io-width = <4>;
- };
-
-BCM281XX family
----------------
-CCU compatible string values for SoCs in the BCM281XX family are:
- "brcm,bcm11351-root-ccu"
- "brcm,bcm11351-aon-ccu"
- "brcm,bcm11351-hub-ccu"
- "brcm,bcm11351-master-ccu"
- "brcm,bcm11351-slave-ccu"
-
-The following table defines the set of CCUs and clock specifiers for
-BCM281XX family clocks. When a clock consumer references a clocks,
-its symbolic specifier (rather than its numeric index value) should
-be used. These specifiers are defined in:
- "include/dt-bindings/clock/bcm281xx.h"
-
- CCU Clock Type Index Specifier
- --- ----- ---- ----- ---------
- root frac_1m peri 0 BCM281XX_ROOT_CCU_FRAC_1M
-
- aon hub_timer peri 0 BCM281XX_AON_CCU_HUB_TIMER
- aon pmu_bsc peri 1 BCM281XX_AON_CCU_PMU_BSC
- aon pmu_bsc_var peri 2 BCM281XX_AON_CCU_PMU_BSC_VAR
-
- hub tmon_1m peri 0 BCM281XX_HUB_CCU_TMON_1M
-
- master sdio1 peri 0 BCM281XX_MASTER_CCU_SDIO1
- master sdio2 peri 1 BCM281XX_MASTER_CCU_SDIO2
- master sdio3 peri 2 BCM281XX_MASTER_CCU_SDIO3
- master sdio4 peri 3 BCM281XX_MASTER_CCU_SDIO4
- master dmac peri 4 BCM281XX_MASTER_CCU_DMAC
- master usb_ic peri 5 BCM281XX_MASTER_CCU_USB_IC
- master hsic2_48m peri 6 BCM281XX_MASTER_CCU_HSIC_48M
- master hsic2_12m peri 7 BCM281XX_MASTER_CCU_HSIC_12M
-
- slave uartb peri 0 BCM281XX_SLAVE_CCU_UARTB
- slave uartb2 peri 1 BCM281XX_SLAVE_CCU_UARTB2
- slave uartb3 peri 2 BCM281XX_SLAVE_CCU_UARTB3
- slave uartb4 peri 3 BCM281XX_SLAVE_CCU_UARTB4
- slave ssp0 peri 4 BCM281XX_SLAVE_CCU_SSP0
- slave ssp2 peri 5 BCM281XX_SLAVE_CCU_SSP2
- slave bsc1 peri 6 BCM281XX_SLAVE_CCU_BSC1
- slave bsc2 peri 7 BCM281XX_SLAVE_CCU_BSC2
- slave bsc3 peri 8 BCM281XX_SLAVE_CCU_BSC3
- slave pwm peri 9 BCM281XX_SLAVE_CCU_PWM
-
-
-BCM21664 family
----------------
-CCU compatible string values for SoCs in the BCM21664 family are:
- "brcm,bcm21664-root-ccu"
- "brcm,bcm21664-aon-ccu"
- "brcm,bcm21664-master-ccu"
- "brcm,bcm21664-slave-ccu"
-
-The following table defines the set of CCUs and clock specifiers for
-BCM21664 family clocks. When a clock consumer references a clocks,
-its symbolic specifier (rather than its numeric index value) should
-be used. These specifiers are defined in:
- "include/dt-bindings/clock/bcm21664.h"
-
- CCU Clock Type Index Specifier
- --- ----- ---- ----- ---------
- root frac_1m peri 0 BCM21664_ROOT_CCU_FRAC_1M
-
- aon hub_timer peri 0 BCM21664_AON_CCU_HUB_TIMER
-
- master sdio1 peri 0 BCM21664_MASTER_CCU_SDIO1
- master sdio2 peri 1 BCM21664_MASTER_CCU_SDIO2
- master sdio3 peri 2 BCM21664_MASTER_CCU_SDIO3
- master sdio4 peri 3 BCM21664_MASTER_CCU_SDIO4
- master sdio1_sleep peri 4 BCM21664_MASTER_CCU_SDIO1_SLEEP
- master sdio2_sleep peri 5 BCM21664_MASTER_CCU_SDIO2_SLEEP
- master sdio3_sleep peri 6 BCM21664_MASTER_CCU_SDIO3_SLEEP
- master sdio4_sleep peri 7 BCM21664_MASTER_CCU_SDIO4_SLEEP
-
- slave uartb peri 0 BCM21664_SLAVE_CCU_UARTB
- slave uartb2 peri 1 BCM21664_SLAVE_CCU_UARTB2
- slave uartb3 peri 2 BCM21664_SLAVE_CCU_UARTB3
- slave uartb4 peri 3 BCM21664_SLAVE_CCU_UARTB4
- slave bsc1 peri 4 BCM21664_SLAVE_CCU_BSC1
- slave bsc2 peri 5 BCM21664_SLAVE_CCU_BSC2
- slave bsc3 peri 6 BCM21664_SLAVE_CCU_BSC3
- slave bsc4 peri 7 BCM21664_SLAVE_CCU_BSC4
diff --git a/Documentation/devicetree/bindings/clock/brcm,kona-ccu.yaml b/Documentation/devicetree/bindings/clock/brcm,kona-ccu.yaml
new file mode 100644
index 000000000000..e5656950b3bd
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/brcm,kona-ccu.yaml
@@ -0,0 +1,181 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/brcm,kona-ccu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom Kona family clock control units (CCU)
+
+maintainers:
+ - Florian Fainelli <florian.fainelli@...adcom.com>
+ - Ray Jui <rjui@...adcom.com>
+ - Scott Branden <sbranden@...adcom.com>
+
+description: |
+ Broadcom "Kona" style clock control unit (CCU) is a clock provider that
+ manages a set of clock signals.
+
+ All available clock IDs are defined in
+ - include/dt-bindings/clock/bcm281xx.h for BCM281XX family
+ - include/dt-bindings/clock/bcm21664.h for BCM21664 family
+
+properties:
+ compatible:
+ enum:
+ - brcm,bcm11351-aon-ccu
+ - brcm,bcm11351-hub-ccu
+ - brcm,bcm11351-master-ccu
+ - brcm,bcm11351-root-ccu
+ - brcm,bcm11351-slave-ccu
+ - brcm,bcm21664-aon-ccu
+ - brcm,bcm21664-master-ccu
+ - brcm,bcm21664-root-ccu
+ - brcm,bcm21664-slave-ccu
+
+ reg:
+ maxItems: 1
+
+ '#clock-cells':
+ const: 1
+
+ clock-output-names:
+ minItems: 1
+ maxItems: 10
+
+required:
+ - compatible
+ - reg
+ - '#clock-cells'
+ - clock-output-names
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: brcm,bcm11351-aon-ccu
+ then:
+ properties:
+ clock-output-names:
+ items:
+ - const: hub_timer
+ - const: pmu_bsc
+ - const: pmu_bsc_var
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: brcm,bcm11351-hub-ccu
+ then:
+ properties:
+ clock-output-names:
+ const: tmon_1m
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: brcm,bcm11351-master-ccu
+ then:
+ properties:
+ clock-output-names:
+ items:
+ - const: sdio1
+ - const: sdio2
+ - const: sdio3
+ - const: sdio4
+ - const: usb_ic
+ - const: hsic2_48m
+ - const: hsic2_12m
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - brcm,bcm11351-root-ccu
+ - brcm,bcm21664-root-ccu
+ then:
+ properties:
+ clock-output-names:
+ const: frac_1m
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: brcm,bcm11351-slave-ccu
+ then:
+ properties:
+ clock-output-names:
+ items:
+ - const: uartb
+ - const: uartb2
+ - const: uartb3
+ - const: uartb4
+ - const: ssp0
+ - const: ssp2
+ - const: bsc1
+ - const: bsc2
+ - const: bsc3
+ - const: pwm
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: brcm,bcm21664-aon-ccu
+ then:
+ properties:
+ clock-output-names:
+ const: hub_timer
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: brcm,bcm21664-master-ccu
+ then:
+ properties:
+ clock-output-names:
+ items:
+ - const: sdio1
+ - const: sdio2
+ - const: sdio3
+ - const: sdio4
+ - const: sdio1_sleep
+ - const: sdio2_sleep
+ - const: sdio3_sleep
+ - const: sdio4_sleep
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: brcm,bcm21664-slave-ccu
+ then:
+ properties:
+ clock-output-names:
+ items:
+ - const: uartb
+ - const: uartb2
+ - const: uartb3
+ - const: bsc1
+ - const: bsc2
+ - const: bsc3
+ - const: bsc4
+
+additionalProperties: false
+
+examples:
+ - |
+ clock-controller@...11000 {
+ compatible = "brcm,bcm11351-slave-ccu";
+ reg = <0x3e011000 0x0f00>;
+ #clock-cells = <1>;
+ clock-output-names = "uartb",
+ "uartb2",
+ "uartb3",
+ "uartb4",
+ "ssp0",
+ "ssp2",
+ "bsc1",
+ "bsc2",
+ "bsc3",
+ "pwm";
+ };
+...
--
2.34.1
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