The TZ1090 top level register region controls the majority of the SoC's
clocking infrastructure.
Create a clock binding for the provider of these clocks, and a header
file in <dt-bindings/clock/> for enumerating the provided clocks.
There are a variety of clocks provided, including from muxes, gates,
deleters, dividers, and PLLs.
Signed-off-by: James Hogan <james.hogan@xxxxxxxxxx>
Cc: Mike Turquette <mturquette@xxxxxxxxxx>
Cc: Rob Herring <robh+dt@xxxxxxxxxx>
Cc: Pawel Moll <pawel.moll@xxxxxxx>
Cc: Mark Rutland <mark.rutland@xxxxxxx>
Cc: Ian Campbell <ijc+devicetree@xxxxxxxxxxxxxx>
Cc: Kumar Gala <galak@xxxxxxxxxxxxxx>
Cc: linux-metag@xxxxxxxxxxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx
---
Changes since v1 (patch 15):
- New patch.
- Convert explicit DT representation of clock infrastructure using
generic bindings to several TZ1090 specific bindings representing
groups of TZ1090 clocks.
---
.../bindings/clock/img,tz1090-top-clocks.txt | 68 ++++++++++++
include/dt-bindings/clock/tz1090-top.h | 118 +++++++++++++++++++++
2 files changed, 186 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/img,tz1090-top-clocks.txt
create mode 100644 include/dt-bindings/clock/tz1090-top.h
diff --git a/Documentation/devicetree/bindings/clock/img,tz1090-top-clocks.txt b/Documentation/devicetree/bindings/clock/img,tz1090-top-clocks.txt
new file mode 100644
index 0000000..75b59f0
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/img,tz1090-top-clocks.txt
@@ -0,0 +1,68 @@
+Binding for TZ1090 Top level register clocks.
+
+This binding uses the common clock binding[1]. It represents the clocks
+controlled from the top level registers of the TZ1090, and encompasses most of
+the complexity of the TZ1090 clock tree:
+
+[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+Required properties:
+- compatible : Shall be "img,tz1090-top-clocks".
+- #clock-cells : From common clock binding; shall be set to 1.
+- reg : Base address for clock registers in top level register
+ region.
+- clocks : Clock specifiers for each input clock.
+- clock-names : Labels for each input clock specified in clocks.
+ Can contain the following entries:
+ "xtal1" : XTAL1 oscillator.
+ "xtal3" : XTAL2 oscillator.
+ "ext_adc_dac" : External ADC/DAC clock input.
+ "ddr_en" : Output of HEP DDR clock gate.
+ "afe_progdiv1",
+ "afe_progdiv3",
+ "afe_rxsync",
+ "afe_txsync",
+ "iqadc_sync" : Output clocks from AFE block.
+
+Optional properties:
+- clock-indices : From common clock binding. Allows clock-output-names to
+ be sparse.
+- clock-output-names : From common clock binding. May be used to name specific
+ output clocks so that other clock providers can find
+ the clocks by name before the provider has been
+ instantiated. Can contain:
+ "sys", "sys_x2_undeleted" "scb", "ext_stc0", "ext_stc1",
+ "if1", "if0", "sys_ucc1", "sys_mtx", "meta", "ucc0",
+ "ucc1_del", "sys_undeleted", "afe", "adcpll_div", "uart",
+ "pdm", "spi0", "spi1", "i2sm", "usb_phy", "sdhost",
+ "ring_osc", "i2s", "meta_trace", "pixel", "out0", "out1",
+ "ddr", "sys_pll", "sys_pdc"
+
+Clock Specifier Definition:
+- <1st-cell>: Output clock number. Use constants from
+ <dt-bindings/clock/tz1090-top.h>.
+
+Examples:
+ top_clks: top_clks {
+ compatible = "img,tz1090-top-clocks";
+ #clock-cells = <1>;
+ reg = <0x02005900 0xb0>;
+ /* input clocks */
+ clocks = <&xtal1>, <&xtal2>, <&ext_adc_dac>,
+ <&hep_cru CLK_HEP_DDR_EN>;
+ clock-names = "xtal1", "xtal2", "ext_adc_dac",
+ "ddr_en";
+ /* output clocks for other clock providers */
+ clock-indices = <CLK_TOP_SYS>,
+ <CLK_TOP_SYS_X2_UNDELETED>;
+ clock-output-names = "sys",
+ "sys_x2_undeleted";
+ };
+
+ ir {
+ ...
+ clocks = <&pdc_clks CLK_PDC_32KHZ>,
+ <&top_clks CLK_TOP_PDC>;
+ clock-names = "core", "sys";
+ ...
+ };
diff --git a/include/dt-bindings/clock/tz1090-top.h b/include/dt-bindings/clock/tz1090-top.h
new file mode 100644
index 0000000..effb06a
--- /dev/null
+++ b/include/dt-bindings/clock/tz1090-top.h
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2013-2014 Imagination Technologies Ltd.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _DT_BINDINGS_CLK_TZ1090_TOP_H
+#define _DT_BINDINGS_CLK_TZ1090_TOP_H
+
+/* Ranges of top level clock numbers */
+#define CLK_TOP_CLKSWITCH_BASE 0
+#define CLK_TOP_CLKENAB_BASE (CLK_TOP_CLKSWITCH_BASE + 27)
+#define CLK_TOP_CLKSWITCH2_BASE (CLK_TOP_CLKENAB_BASE + 9)
+#define CLK_TOP_CLKENAB2_BASE (CLK_TOP_CLKSWITCH2_BASE + 10)
+#define CLK_TOP_DEL_BASE (CLK_TOP_CLKENAB2_BASE + 7)
+#define CLK_TOP_DIV_BASE (CLK_TOP_DEL_BASE + 4)
+#define CLK_TOP_PLL_BASE (CLK_TOP_DIV_BASE + 18)
+#define CLK_TOP_CLKEN_BASE (CLK_TOP_PLL_BASE + 2)
+#define CLK_TOP_MAX (CLK_TOP_CLKEN_BASE + 1)
+
+
+/* CR_TOP_CLKSWITCH clocks */
+#define CLK_TOP_SYS_SW (CLK_TOP_CLKSWITCH_BASE + 0)
+#define CLK_TOP_SYS_X2_UNDELETED (CLK_TOP_CLKSWITCH_BASE + 1)
+#define CLK_TOP_OUT0_SW0 (CLK_TOP_CLKSWITCH_BASE + 2)
+#define CLK_TOP_OUT0_SW1 (CLK_TOP_CLKSWITCH_BASE + 3)
+#define CLK_TOP_OUT0_SW2 (CLK_TOP_CLKSWITCH_BASE + 4)
+#define CLK_TOP_OUT0_SW3 (CLK_TOP_CLKSWITCH_BASE + 5)
+#define CLK_TOP_OUT1_SW0 (CLK_TOP_CLKSWITCH_BASE + 6)
+#define CLK_TOP_OUT1_SW1 (CLK_TOP_CLKSWITCH_BASE + 7)
+#define CLK_TOP_OUT1_SW2 (CLK_TOP_CLKSWITCH_BASE + 8)
+#define CLK_TOP_OUT1_SW3 (CLK_TOP_CLKSWITCH_BASE + 9)
+#define CLK_TOP_I2S_SW2 (CLK_TOP_CLKSWITCH_BASE + 10)
+#define CLK_TOP_I2S_SW0 (CLK_TOP_CLKSWITCH_BASE + 11)
+#define CLK_TOP_I2S_SW1 (CLK_TOP_CLKSWITCH_BASE + 12)
+#define CLK_TOP_SCB_SW (CLK_TOP_CLKSWITCH_BASE + 13)
+#define CLK_TOP_UART_SW (CLK_TOP_CLKSWITCH_BASE + 14)
+#define CLK_TOP_EXT_STC0_SW (CLK_TOP_CLKSWITCH_BASE + 15)
+#define CLK_TOP_EXT_STC1_SW (CLK_TOP_CLKSWITCH_BASE + 16)
+#define CLK_TOP_USB_SW0 (CLK_TOP_CLKSWITCH_BASE + 17)
+#define CLK_TOP_USB_SW1 (CLK_TOP_CLKSWITCH_BASE + 18)
+#define CLK_TOP_AFE_SW0 (CLK_TOP_CLKSWITCH_BASE + 19)
+#define CLK_TOP_AFE_SW1 (CLK_TOP_CLKSWITCH_BASE + 20)
+#define CLK_TOP_ADCPLL_SW0 (CLK_TOP_CLKSWITCH_BASE + 21)
+#define CLK_TOP_ADCPLL_SW1 (CLK_TOP_CLKSWITCH_BASE + 22)
+#define CLK_TOP_ADCPLL_SW2 (CLK_TOP_CLKSWITCH_BASE + 23)
+#define CLK_TOP_ADCPLL_SW3 (CLK_TOP_CLKSWITCH_BASE + 24)
+#define CLK_TOP_USB_SW2 (CLK_TOP_CLKSWITCH_BASE + 25)
+#define CLK_TOP_USB_SW3 (CLK_TOP_CLKSWITCH_BASE + 26)
+
+/* CR_TOP_CLKENAB clocks */
+#define CLK_TOP_OUT0_EN (CLK_TOP_CLKENAB_BASE + 0)
+#define CLK_TOP_OUT1_EN (CLK_TOP_CLKENAB_BASE + 1)
+#define CLK_TOP_I2S_EN (CLK_TOP_CLKENAB_BASE + 2)
+#define CLK_TOP_SCB (CLK_TOP_CLKENAB_BASE + 3)
+#define CLK_TOP_UART_EN (CLK_TOP_CLKENAB_BASE + 4)
+#define CLK_TOP_EXT_STC0 (CLK_TOP_CLKENAB_BASE + 5)
+#define CLK_TOP_EXT_STC1 (CLK_TOP_CLKENAB_BASE + 6)
+#define CLK_TOP_USB_EN (CLK_TOP_CLKENAB_BASE + 7)
+#define CLK_TOP_ADCPLL_EN (CLK_TOP_CLKENAB_BASE + 8)
+
+/* CR_TOP_CLKSWITCH2 clocks */
+#define CLK_TOP_PIXEL_SW0 (CLK_TOP_CLKSWITCH2_BASE + 0)
+#define CLK_TOP_PIXEL_SW1 (CLK_TOP_CLKSWITCH2_BASE + 1)
+#define CLK_TOP_PIXEL_SW2 (CLK_TOP_CLKSWITCH2_BASE + 2)
+#define CLK_TOP_PIXEL_SW3 (CLK_TOP_CLKSWITCH2_BASE + 3)
+#define CLK_TOP_PIXEL_SW4 (CLK_TOP_CLKSWITCH2_BASE + 4)
+#define CLK_TOP_IF1_SW (CLK_TOP_CLKSWITCH2_BASE + 5)
+#define CLK_TOP_IF0_SW (CLK_TOP_CLKSWITCH2_BASE + 6)
+#define CLK_TOP_DAC0_SW (CLK_TOP_CLKSWITCH2_BASE + 7)
+#define CLK_TOP_UCC1_SW (CLK_TOP_CLKSWITCH2_BASE + 8)
+#define CLK_TOP_UCC0_SW (CLK_TOP_CLKSWITCH2_BASE + 9)
+
+/* CR_TOP_CLKENAB2 clocks */
+#define CLK_TOP_PIXEL_EN (CLK_TOP_CLKENAB2_BASE + 0)
+#define CLK_TOP_IF1 (CLK_TOP_CLKENAB2_BASE + 1)
+#define CLK_TOP_IF0 (CLK_TOP_CLKENAB2_BASE + 2)
+#define CLK_TOP_EXT_ADC_EN (CLK_TOP_CLKENAB2_BASE + 3)
+#define CLK_TOP_DAC0 (CLK_TOP_CLKENAB2_BASE + 4)
+#define CLK_TOP_SYS_UCC1 (CLK_TOP_CLKENAB2_BASE + 5)
+#define CLK_TOP_SYS_MTX (CLK_TOP_CLKENAB2_BASE + 6)
+
+/* Clock deleters */
+#define CLK_TOP_SYS (CLK_TOP_DEL_BASE + 0)
+#define CLK_TOP_META (CLK_TOP_DEL_BASE + 1)
+#define CLK_TOP_UCC0 (CLK_TOP_DEL_BASE + 2)
+#define CLK_TOP_UCC1_DEL (CLK_TOP_DEL_BASE + 3)
+
+/* Clock dividers */
+#define CLK_TOP_SYS_DIV (CLK_TOP_DIV_BASE + 0)
+#define CLK_TOP_SYS_UNDELETED (CLK_TOP_DIV_BASE + 1)
+#define CLK_TOP_AFE (CLK_TOP_DIV_BASE + 2)
+#define CLK_TOP_ADCPLL_DIV (CLK_TOP_DIV_BASE + 3)
+#define CLK_TOP_UART (CLK_TOP_DIV_BASE + 4)
+#define CLK_TOP_PDM (CLK_TOP_DIV_BASE + 5)
+#define CLK_TOP_SPI0 (CLK_TOP_DIV_BASE + 6)
+#define CLK_TOP_SPI1 (CLK_TOP_DIV_BASE + 7)
+#define CLK_TOP_I2SM (CLK_TOP_DIV_BASE + 8)
+#define CLK_TOP_USB_PHY (CLK_TOP_DIV_BASE + 9)
+#define CLK_TOP_SDHOST (CLK_TOP_DIV_BASE + 10)
+#define CLK_TOP_RING_OSC (CLK_TOP_DIV_BASE + 11)
+#define CLK_TOP_I2S (CLK_TOP_DIV_BASE + 12)
+#define CLK_TOP_META_TRACE (CLK_TOP_DIV_BASE + 13)
+#define CLK_TOP_PIXEL (CLK_TOP_DIV_BASE + 14)
+#define CLK_TOP_OUT0 (CLK_TOP_DIV_BASE + 15)
+#define CLK_TOP_OUT1 (CLK_TOP_DIV_BASE + 16)
+#define CLK_TOP_DDR (CLK_TOP_DIV_BASE + 17)
+
+/* PLL clocks */
+#define CLK_TOP_SYSPLL (CLK_TOP_PLL_BASE + 0)
+#define CLK_TOP_ADCPLL (CLK_TOP_PLL_BASE + 1)
+
+/* CR_TOP_CLKEN clocks */
+#define CLK_TOP_PDC (CLK_TOP_CLKEN_BASE + 0)
+
+#endif
--
2.0.4
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