arm: exynos: Migrate E850-96 board to OF_UPSTREAM

Use upstream device tree files and bindings. To do so:
 - imply (enable) OF_UPSTREAM option for E850-96 target
 - point DEFAULT_DEVICE_TREE in E850-96 config to upstream dts
 - remove now not needed local dts files, binding docs and headers
 - update MAINTAINERS and board/samsung/e850-96/MAINTAINERS
   correspondingly

Upstream device tree files for Exynos850 SoC and E850-96 board are
pretty much the same as local (removed) ones, so the conversion is
rather straightforward and painless in this case. The appended dts file
(arch/arm/dts/exynos850-e850-96-u-boot.dtsi) stays unchanged.

The only remaining local dt-bindings doc for E850-96 board is
exynos-pmu.yaml. It wasn't removed as it's quite different from Linux
kernel version. Particularly U-Boot local version of exynos-pmu.yaml
describes "samsung,uart-debug-1" property, which is not present in Linux
kernel binding. Later it might be upstreamed to Linux kernel, and once
it's done the U-Boot exynos-pmu.yaml binding can be removed.

No functional change.

Acked-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

2 files changed, 0 insertions, 469 deletions

diff --git a/doc/device-tree-bindings/clock/samsung,exynos850-clock.yaml b/doc/device-tree-bindings/clock/samsung,exynos850-clock.yaml
deleted file mode 100644
index a0906efe122..00000000000
--- a/doc/device-tree-bindings/clock/samsung,exynos850-clock.yaml
+++ /dev/null
@@ -1,307 +0,0 @@
-# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
-%YAML 1.2
----
-$id: http://devicetree.org/schemas/clock/samsung,exynos850-clock.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: Samsung Exynos850 SoC clock controller
-
-maintainers:
-  - Sam Protsenko <semen.protsenko@linaro.org>
-
-description: |
-  Exynos850 clock controller is comprised of several CMU units, generating
-  clocks for different domains. Those CMU units are modeled as separate device
-  tree nodes, and might depend on each other. Root clocks in that clock tree are
-  two external clocks:: OSCCLK (26 MHz) and RTCCLK (32768 Hz). Those external
-  clocks must be defined as fixed-rate clocks in dts.
-
-  CMU_TOP is a top-level CMU, where all base clocks are prepared using PLLs and
-  dividers; all other leaf clocks (other CMUs) are usually derived from CMU_TOP.
-
-  Each clock is assigned an identifier and client nodes can use this identifier
-  to specify the clock which they consume. All clocks available for usage
-  in clock consumer nodes are defined as preprocessor macros in
-  'dt-bindings/clock/exynos850.h' header.
-
-properties:
-  compatible:
-    enum:
-      - samsung,exynos850-cmu-top
-      - samsung,exynos850-cmu-apm
-      - samsung,exynos850-cmu-aud
-      - samsung,exynos850-cmu-cmgp
-      - samsung,exynos850-cmu-core
-      - samsung,exynos850-cmu-dpu
-      - samsung,exynos850-cmu-g3d
-      - samsung,exynos850-cmu-hsi
-      - samsung,exynos850-cmu-is
-      - samsung,exynos850-cmu-mfcmscl
-      - samsung,exynos850-cmu-peri
-
-  clocks:
-    minItems: 1
-    maxItems: 5
-
-  clock-names:
-    minItems: 1
-    maxItems: 5
-
-  "#clock-cells":
-    const: 1
-
-  reg:
-    maxItems: 1
-
-allOf:
-  - if:
-      properties:
-        compatible:
-          contains:
-            const: samsung,exynos850-cmu-top
-
-    then:
-      properties:
-        clocks:
-          items:
-            - description: External reference clock (26 MHz)
-
-        clock-names:
-          items:
-            - const: oscclk
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            const: samsung,exynos850-cmu-apm
-
-    then:
-      properties:
-        clocks:
-          items:
-            - description: External reference clock (26 MHz)
-            - description: CMU_APM bus clock (from CMU_TOP)
-
-        clock-names:
-          items:
-            - const: oscclk
-            - const: dout_clkcmu_apm_bus
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            const: samsung,exynos850-cmu-aud
-
-    then:
-      properties:
-        clocks:
-          items:
-            - description: External reference clock (26 MHz)
-            - description: AUD clock (from CMU_TOP)
-
-        clock-names:
-          items:
-            - const: oscclk
-            - const: dout_aud
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            const: samsung,exynos850-cmu-cmgp
-
-    then:
-      properties:
-        clocks:
-          items:
-            - description: External reference clock (26 MHz)
-            - description: CMU_CMGP bus clock (from CMU_APM)
-
-        clock-names:
-          items:
-            - const: oscclk
-            - const: gout_clkcmu_cmgp_bus
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            const: samsung,exynos850-cmu-core
-
-    then:
-      properties:
-        clocks:
-          items:
-            - description: External reference clock (26 MHz)
-            - description: CMU_CORE bus clock (from CMU_TOP)
-            - description: CCI clock (from CMU_TOP)
-            - description: eMMC clock (from CMU_TOP)
-            - description: SSS clock (from CMU_TOP)
-
-        clock-names:
-          items:
-            - const: oscclk
-            - const: dout_core_bus
-            - const: dout_core_cci
-            - const: dout_core_mmc_embd
-            - const: dout_core_sss
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            const: samsung,exynos850-cmu-dpu
-
-    then:
-      properties:
-        clocks:
-          items:
-            - description: External reference clock (26 MHz)
-            - description: DPU clock (from CMU_TOP)
-
-        clock-names:
-          items:
-            - const: oscclk
-            - const: dout_dpu
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            const: samsung,exynos850-cmu-g3d
-
-    then:
-      properties:
-        clocks:
-          items:
-            - description: External reference clock (26 MHz)
-            - description: G3D clock (from CMU_TOP)
-
-        clock-names:
-          items:
-            - const: oscclk
-            - const: dout_g3d_switch
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            const: samsung,exynos850-cmu-hsi
-
-    then:
-      properties:
-        clocks:
-          items:
-            - description: External reference clock (26 MHz)
-            - description: External RTC clock (32768 Hz)
-            - description: CMU_HSI bus clock (from CMU_TOP)
-            - description: SD card clock (from CMU_TOP)
-            - description: USB 2.0 DRD clock (from CMU_TOP)
-
-        clock-names:
-          items:
-            - const: oscclk
-            - const: rtcclk
-            - const: dout_hsi_bus
-            - const: dout_hsi_mmc_card
-            - const: dout_hsi_usb20drd
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            const: samsung,exynos850-cmu-is
-
-    then:
-      properties:
-        clocks:
-          items:
-            - description: External reference clock (26 MHz)
-            - description: CMU_IS bus clock (from CMU_TOP)
-            - description: Image Texture Processing core clock (from CMU_TOP)
-            - description: Visual Recognition Accelerator clock (from CMU_TOP)
-            - description: Geometric Distortion Correction clock (from CMU_TOP)
-
-        clock-names:
-          items:
-            - const: oscclk
-            - const: dout_is_bus
-            - const: dout_is_itp
-            - const: dout_is_vra
-            - const: dout_is_gdc
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            const: samsung,exynos850-cmu-mfcmscl
-
-    then:
-      properties:
-        clocks:
-          items:
-            - description: External reference clock (26 MHz)
-            - description: Multi-Format Codec clock (from CMU_TOP)
-            - description: Memory to Memory Scaler clock (from CMU_TOP)
-            - description: Multi-Channel Scaler clock (from CMU_TOP)
-            - description: JPEG codec clock (from CMU_TOP)
-
-        clock-names:
-          items:
-            - const: oscclk
-            - const: dout_mfcmscl_mfc
-            - const: dout_mfcmscl_m2m
-            - const: dout_mfcmscl_mcsc
-            - const: dout_mfcmscl_jpeg
-
-  - if:
-      properties:
-        compatible:
-          contains:
-            const: samsung,exynos850-cmu-peri
-
-    then:
-      properties:
-        clocks:
-          items:
-            - description: External reference clock (26 MHz)
-            - description: CMU_PERI bus clock (from CMU_TOP)
-            - description: UART clock (from CMU_TOP)
-            - description: Parent clock for HSI2C and SPI (from CMU_TOP)
-
-        clock-names:
-          items:
-            - const: oscclk
-            - const: dout_peri_bus
-            - const: dout_peri_uart
-            - const: dout_peri_ip
-
-required:
-  - compatible
-  - "#clock-cells"
-  - clocks
-  - clock-names
-  - reg
-
-additionalProperties: false
-
-examples:
-  # Clock controller node for CMU_PERI
-  - |
-    #include <dt-bindings/clock/exynos850.h>
-
-    cmu_peri: clock-controller@10030000 {
-        compatible = "samsung,exynos850-cmu-peri";
-        reg = <0x10030000 0x8000>;
-        #clock-cells = <1>;
-
-        clocks = <&oscclk>, <&cmu_top CLK_DOUT_PERI_BUS>,
-                 <&cmu_top CLK_DOUT_PERI_UART>,
-                 <&cmu_top CLK_DOUT_PERI_IP>;
-        clock-names = "oscclk", "dout_peri_bus",
-                      "dout_peri_uart", "dout_peri_ip";
-    };
-
-...
diff --git a/doc/device-tree-bindings/soc/samsung/exynos-usi.yaml b/doc/device-tree-bindings/soc/samsung/exynos-usi.yaml
deleted file mode 100644
index 8e6423f1156..00000000000
--- a/doc/device-tree-bindings/soc/samsung/exynos-usi.yaml
+++ /dev/null
@@ -1,162 +0,0 @@
-# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
-%YAML 1.2
----
-$id: http://devicetree.org/schemas/soc/samsung/exynos-usi.yaml#
-$schema: http://devicetree.org/meta-schemas/core.yaml#
-
-title: Samsung's Exynos USI (Universal Serial Interface)
-
-maintainers:
-  - Sam Protsenko <semen.protsenko@linaro.org>
-
-description: |
-  USI IP-core provides selectable serial protocol (UART, SPI or High-Speed I2C).
-  USI shares almost all internal circuits within each protocol, so only one
-  protocol can be chosen at a time. USI is modeled as a node with zero or more
-  child nodes, each representing a serial sub-node device. The mode setting
-  selects which particular function will be used.
-
-properties:
-  $nodename:
-    pattern: "^usi@[0-9a-f]+$"
-
-  compatible:
-    enum:
-      - samsung,exynos850-usi
-
-  reg: true
-
-  clocks: true
-
-  clock-names: true
-
-  ranges: true
-
-  "#address-cells":
-    const: 1
-
-  "#size-cells":
-    const: 1
-
-  samsung,sysreg:
-    $ref: /schemas/types.yaml#/definitions/phandle-array
-    items:
-      - items:
-          - description: phandle to System Register syscon node
-          - description: offset of SW_CONF register for this USI controller
-    description:
-      Should be phandle/offset pair. The phandle to System Register syscon node
-      (for the same domain where this USI controller resides) and the offset
-      of SW_CONF register for this USI controller.
-
-  samsung,mode:
-    $ref: /schemas/types.yaml#/definitions/uint32
-    description:
-      Selects USI function (which serial protocol to use). Refer to
-      <include/dt-bindings/soc/samsung,exynos-usi.h> for valid USI mode values.
-
-  samsung,clkreq-on:
-    type: boolean
-    description:
-      Enable this property if underlying protocol requires the clock to be
-      continuously provided without automatic gating. As suggested by SoC
-      manual, it should be set in case of SPI/I2C slave, UART Rx and I2C
-      multi-master mode. Usually this property is needed if USI mode is set
-      to "UART".
-
-      This property is optional.
-
-patternProperties:
-  "^i2c@[0-9a-f]+$":
-    $ref: /schemas/i2c/i2c-exynos5.yaml
-    description: Child node describing underlying I2C
-
-  "^serial@[0-9a-f]+$":
-    $ref: /schemas/serial/samsung_uart.yaml
-    description: Child node describing underlying UART/serial
-
-  "^spi@[0-9a-f]+$":
-    $ref: /schemas/spi/samsung,spi.yaml
-    description: Child node describing underlying SPI
-
-required:
-  - compatible
-  - ranges
-  - "#address-cells"
-  - "#size-cells"
-  - samsung,sysreg
-  - samsung,mode
-
-if:
-  properties:
-    compatible:
-      contains:
-        enum:
-          - samsung,exynos850-usi
-
-then:
-  properties:
-    reg:
-      maxItems: 1
-
-    clocks:
-      items:
-        - description: Bus (APB) clock
-        - description: Operating clock for UART/SPI/I2C protocol
-
-    clock-names:
-      items:
-        - const: pclk
-        - const: ipclk
-
-  required:
-    - reg
-    - clocks
-    - clock-names
-
-else:
-  properties:
-    reg: false
-    clocks: false
-    clock-names: false
-    samsung,clkreq-on: false
-
-additionalProperties: false
-
-examples:
-  - |
-    #include <dt-bindings/interrupt-controller/arm-gic.h>
-    #include <dt-bindings/soc/samsung,exynos-usi.h>
-
-    usi0: usi@138200c0 {
-        compatible = "samsung,exynos850-usi";
-        reg = <0x138200c0 0x20>;
-        samsung,sysreg = <&sysreg_peri 0x1010>;
-        samsung,mode = <USI_V2_UART>;
-        samsung,clkreq-on; /* needed for UART mode */
-        #address-cells = <1>;
-        #size-cells = <1>;
-        ranges;
-        clocks = <&cmu_peri 32>, <&cmu_peri 31>;
-        clock-names = "pclk", "ipclk";
-
-        serial_0: serial@13820000 {
-            compatible = "samsung,exynos850-uart";
-            reg = <0x13820000 0xc0>;
-            interrupts = <GIC_SPI 227 IRQ_TYPE_LEVEL_HIGH>;
-            clocks = <&cmu_peri 32>, <&cmu_peri 31>;
-            clock-names = "uart", "clk_uart_baud0";
-            status = "disabled";
-        };
-
-        hsi2c_0: i2c@13820000 {
-            compatible = "samsung,exynosautov9-hsi2c";
-            reg = <0x13820000 0xc0>;
-            interrupts = <GIC_SPI 227 IRQ_TYPE_LEVEL_HIGH>;
-            #address-cells = <1>;
-            #size-cells = <0>;
-            clocks = <&cmu_peri 31>, <&cmu_peri 32>;
-            clock-names = "hsi2c", "hsi2c_pclk";
-            status = "disabled";
-        };
-    };