From: nm@ti•com (Nishanth Menon)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCHv9 08/43] clk: ti: add composite clock support
Date: Thu, 31 Oct 2013 11:32:30 -0500 [thread overview]
Message-ID: <5272861E.3090506@ti.com> (raw)
In-Reply-To: <527284DC.2070701@ti.com>
On 10/31/2013 11:27 AM, Nishanth Menon wrote:
> On 10/25/2013 10:57 AM, Tero Kristo wrote:
>> This is a multipurpose clock node, which contains support for multiple
>> sub-clocks. Uses basic composite clock type to implement the actual
>> functionality, and TI specific gate, mux and divider clocks.
>>
>> Signed-off-by: Tero Kristo <t-kristo@ti•com>
>> ---
>> .../devicetree/bindings/clock/ti/composite.txt | 54 +++++
>> drivers/clk/ti/Makefile | 2 +-
>> drivers/clk/ti/composite.c | 222 ++++++++++++++++++++
>> include/linux/clk/ti.h | 8 +
>> 4 files changed, 285 insertions(+), 1 deletion(-)
>> create mode 100644 Documentation/devicetree/bindings/clock/ti/composite.txt
>> create mode 100644 drivers/clk/ti/composite.c
>>
>> diff --git a/Documentation/devicetree/bindings/clock/ti/composite.txt b/Documentation/devicetree/bindings/clock/ti/composite.txt
>> new file mode 100644
>> index 0000000..5f43c47
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/clock/ti/composite.txt
>> @@ -0,0 +1,54 @@
>> +Binding for TI composite clock.
>> +
>> +Binding status: Unstable - ABI compatibility may be broken in the future
>> +
>> +This binding uses the common clock binding[1]. It assumes a
>> +register-mapped composite clock with multiple different sub-types;
>> +
>> +a multiplexer clock with multiple input clock signals or parents, one
>> +of which can be selected as output, this behaves exactly as [2]
>> +
>> +an adjustable clock rate divider, this behaves exactly as [3]
>> +
>> +a gating function which can be used to enable and disable the output
>> +clock, this behaves exactly as [4]
>> +
>> +The binding must provide a list of the component clocks that shall be
>> +merged to this clock. The component clocks shall be of one of the
>> +"ti,*composite*-clock" types.
>> +
>> +[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
>> +[2] Documentation/devicetree/bindings/clock/ti/mux.txt
>> +[3] Documentation/devicetree/bindings/clock/ti/divider.txt
>> +[4] Documentation/devicetree/bindings/clock/ti/gate.txt
>> +
>> +Required properties:
>> +- compatible : shall be: "ti,composite-clock"
>> +- clocks : link phandles of component clocks
>> +- #clock-cells : from common clock binding; shall be set to 0.
>> +
>> +Examples:
>> +
>> +usb_l4_gate_ick: usb_l4_gate_ick {
>> + #clock-cells = <0>;
>> + compatible = "ti,composite-interface-clock";
>> + clocks = <&l4_ick>;
>> + ti,bit-shift = <5>;
>> + reg = <0x0a10>;
>> +};
>> +
>> +usb_l4_div_ick: usb_l4_div_ick {
>> + #clock-cells = <0>;
>> + compatible = "ti,composite-divider-clock";
>> + clocks = <&l4_ick>;
>> + ti,bit-shift = <4>;
>> + ti,max-div = <1>;
>> + reg = <0x0a40>;
>> + ti,index-starts-at-one;
>> +};
>> +
>> +usb_l4_ick: usb_l4_ick {
>> + #clock-cells = <0>;
>> + compatible = "ti,composite-clock";
>> + clocks = <&usb_l4_gate_ick>, <&usb_l4_div_ick>;
>> +};
>From Topology perspective, would this be a better approach?
usb_l4_ick: usb_l4_ick {
#clock-cells = <0>;
compatible = "ti,composite-clock";
usb_l4_gate_ick: usb_l4_gate_ick {
#clock-cells = <0>;
compatible = "ti,composite-interface-clock";
clocks = <&l4_ick>;
ti,bit-shift = <5>;
reg = <0x0a10>;
};
usb_l4_div_ick: usb_l4_div_ick {
#clock-cells = <0>;
compatible = "ti,composite-divider-clock";
clocks = <&l4_ick>;
ti,bit-shift = <4>;
ti,max-div = <1>;
reg = <0x0a40>;
ti,index-starts-at-one;
};
};
--
Regards,
Nishanth Menon
next prev parent reply other threads:[~2013-10-31 16:32 UTC|newest]
Thread overview: 106+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-25 15:56 [PATCHv9 00/43] ARM: TI SoC clock DT conversion Tero Kristo
2013-10-25 15:56 ` [PATCHv9 01/43] clk: Add support for regmap register read/write Tero Kristo
2013-10-31 14:03 ` Nishanth Menon
2013-10-31 14:40 ` Tero Kristo
2013-10-31 15:46 ` Nishanth Menon
2013-11-01 8:57 ` Tero Kristo
2013-11-05 21:43 ` Gerhard Sittig
2013-11-06 10:54 ` Tero Kristo
2013-11-02 13:26 ` Tomasz Figa
2013-10-25 15:56 ` [PATCHv9 02/43] clk: divider: add init call which supports regmap Tero Kristo
2013-10-25 15:56 ` [PATCHv9 03/43] clk: mux: " Tero Kristo
2013-10-25 15:56 ` [PATCHv9 04/43] CLK: TI: Add DPLL clock support Tero Kristo
2013-10-31 14:19 ` Nishanth Menon
2013-10-31 14:56 ` Tero Kristo
2013-10-31 15:25 ` Nishanth Menon
2013-10-25 15:56 ` [PATCHv9 05/43] CLK: TI: add DT alias clock registration mechanism Tero Kristo
2013-10-29 17:50 ` Matt Sealey
2013-10-30 8:29 ` Tero Kristo
2013-10-30 17:38 ` Matt Sealey
2013-10-31 9:18 ` Tero Kristo
2013-11-02 13:49 ` Tomasz Figa
2013-11-04 22:45 ` Matt Sealey
2013-10-25 15:57 ` [PATCHv9 06/43] CLK: ti: add init support for clock IP blocks Tero Kristo
2013-10-31 15:42 ` Nishanth Menon
2013-11-01 9:12 ` Tero Kristo
2013-11-01 19:13 ` Nishanth Menon
2013-11-04 7:23 ` Tero Kristo
2013-10-25 15:57 ` [PATCHv9 07/43] CLK: TI: add autoidle support Tero Kristo
2013-10-31 16:05 ` Nishanth Menon
2013-11-01 9:18 ` Tero Kristo
2013-11-01 19:16 ` Nishanth Menon
2013-11-04 10:00 ` Tero Kristo
2013-11-04 14:59 ` Nishanth Menon
2013-11-05 8:10 ` Tero Kristo
2013-10-25 15:57 ` [PATCHv9 08/43] clk: ti: add composite clock support Tero Kristo
2013-10-31 16:27 ` Nishanth Menon
2013-10-31 16:32 ` Nishanth Menon [this message]
2013-11-01 9:40 ` Tero Kristo
2013-11-01 9:35 ` Tero Kristo
2013-11-01 19:24 ` Nishanth Menon
2013-10-25 15:57 ` [PATCHv9 09/43] CLK: ti: add support for ti divider-clock Tero Kristo
2013-10-31 18:02 ` Nishanth Menon
2013-11-01 9:48 ` Tero Kristo
2013-11-01 9:54 ` Tero Kristo
2013-11-01 19:35 ` Nishanth Menon
2013-11-04 10:54 ` Tero Kristo
2013-10-25 15:57 ` [PATCHv9 10/43] clk: ti: add support for TI fixed factor clock Tero Kristo
2013-10-31 18:12 ` Nishanth Menon
2013-11-01 9:52 ` Tero Kristo
2013-10-25 15:57 ` [PATCHv9 11/43] CLK: TI: add support for gate clock Tero Kristo
2013-11-01 20:11 ` Nishanth Menon
2013-11-04 12:23 ` Tero Kristo
2013-10-25 15:57 ` [PATCHv9 12/43] CLK: TI: add support for clockdomain binding Tero Kristo
2013-11-01 20:22 ` Nishanth Menon
2013-11-04 14:30 ` Tero Kristo
2013-10-25 15:57 ` [PATCHv9 13/43] clk: ti: add support for basic mux clock Tero Kristo
2013-11-01 21:01 ` Nishanth Menon
2013-11-05 8:09 ` Tero Kristo
2013-10-25 15:57 ` [PATCHv9 14/43] CLK: TI: add omap4 clock init file Tero Kristo
2013-10-25 15:57 ` [PATCHv9 15/43] CLK: TI: add omap5 " Tero Kristo
2013-10-25 15:57 ` [PATCHv9 16/43] CLK: TI: omap5: Initialize USB_DPLL at boot Tero Kristo
2013-10-25 15:57 ` [PATCHv9 17/43] CLK: TI: DRA7: Add APLL support Tero Kristo
2013-10-25 15:57 ` [PATCHv9 18/43] CLK: TI: add dra7 clock init file Tero Kristo
2013-10-25 15:57 ` [PATCHv9 19/43] CLK: TI: add am33xx " Tero Kristo
2013-10-25 15:57 ` [PATCHv9 20/43] CLK: TI: add interface clock support for OMAP3 Tero Kristo
2013-10-25 15:57 ` [PATCHv9 21/43] CLK: TI: add omap3 clock init file Tero Kristo
2013-10-25 15:57 ` [PATCHv9 22/43] CLK: TI: add am43xx " Tero Kristo
2013-10-25 15:57 ` [PATCHv9 23/43] ARM: dts: omap4 clock data Tero Kristo
2013-10-25 15:57 ` [PATCHv9 24/43] ARM: dts: omap5 " Tero Kristo
2013-10-25 15:57 ` [PATCHv9 25/43] ARM: dts: dra7 " Tero Kristo
2013-10-25 15:57 ` [PATCHv9 26/43] ARM: dts: clk: Add apll related clocks Tero Kristo
2013-10-25 15:57 ` [PATCHv9 27/43] ARM: dts: DRA7: Change apll_pcie_m2_ck to fixed factor clock Tero Kristo
2013-10-25 15:57 ` [PATCHv9 28/43] ARM: dts: DRA7: Add PCIe related clock nodes Tero Kristo
2013-10-25 15:57 ` [PATCHv9 29/43] ARM: dts: DRA7: link in clock DT data Tero Kristo
2013-10-25 15:57 ` [PATCHv9 30/43] ARM: dts: am33xx clock data Tero Kristo
2013-10-26 0:36 ` Jan Lübbe
2013-10-26 12:46 ` Tero Kristo
2013-10-28 9:59 ` Jan Lübbe
2013-10-28 10:12 ` Tero Kristo
2013-10-25 15:57 ` [PATCHv9 31/43] ARM: dts: omap3 " Tero Kristo
2013-10-25 15:57 ` [PATCHv9 32/43] ARM: dts: AM35xx: use DT " Tero Kristo
2013-11-01 21:18 ` Nishanth Menon
2013-11-05 8:12 ` Tero Kristo
2013-10-25 15:57 ` [PATCHv9 33/43] ARM: dts: am43xx " Tero Kristo
2013-11-01 21:16 ` Nishanth Menon
2013-11-04 14:15 ` Tero Kristo
2013-10-25 15:57 ` [PATCHv9 34/43] ARM: OMAP2+: clock: add support for regmap Tero Kristo
2013-10-25 15:57 ` [PATCHv9 35/43] ARM: OMAP2+: clock: use driver API instead of direct memory read/write Tero Kristo
2013-10-25 15:57 ` [PATCHv9 36/43] ARM: OMAP: hwmod: fix an incorrect clk type cast with _get_clkdm Tero Kristo
2013-10-25 15:57 ` [PATCHv9 37/43] ARM: OMAP3: hwmod: initialize clkdm from clkdm_name Tero Kristo
2013-10-25 15:57 ` [PATCHv9 38/43] ARM: OMAP2+: PRM: add support for initializing PRCM clock modules from DT Tero Kristo
2013-11-01 21:07 ` Nishanth Menon
2013-11-05 8:22 ` Tero Kristo
2013-10-25 15:57 ` [PATCHv9 39/43] ARM: OMAP2+: io: use new clock init API Tero Kristo
2013-10-25 15:57 ` [PATCHv9 40/43] ARM: OMAP4: remove old clock data and link in new clock init code Tero Kristo
2013-10-25 15:57 ` [PATCHv9 41/43] ARM: OMAP: DRA7: Enable clock init Tero Kristo
2013-10-25 15:57 ` [PATCHv9 42/43] ARM: AM33xx: remove old clock data and link in new clock init code Tero Kristo
2013-10-25 15:57 ` [PATCHv9 43/43] ARM: OMAP3: use DT clock init if DT data is available Tero Kristo
2013-10-29 16:19 ` [PATCHv9 00/43] ARM: TI SoC clock DT conversion Nishanth Menon
2013-10-30 8:23 ` Tero Kristo
2013-10-30 15:00 ` Nishanth Menon
2013-10-30 20:10 ` Nishanth Menon
2013-10-31 9:10 ` Tero Kristo
2013-10-31 13:55 ` Nishanth Menon
2013-11-01 21:25 ` Nishanth Menon
2013-11-04 7:15 ` Tero Kristo
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