Previously we've only supported a few fixed clocks based on assumptions about how the firmware sets up the clocks, but this binding will let us control the actual (audio power domain) clock manager. Signed-off-by: Eric Anholt <eric@anholt.net> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Acked-by: Lee Jones <lee@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>tirimbino
parent
4f61d8e220
commit
2c74b5399d
@ -0,0 +1,45 @@ |
||||
Broadcom BCM2835 CPRMAN clocks |
||||
|
||||
This binding uses the common clock binding: |
||||
Documentation/devicetree/bindings/clock/clock-bindings.txt |
||||
|
||||
The CPRMAN clock controller generates clocks in the audio power domain |
||||
of the BCM2835. There is a level of PLLs deriving from an external |
||||
oscillator, a level of PLL dividers that produce channels off of the |
||||
few PLLs, and a level of mostly-generic clock generators sourcing from |
||||
the PLL channels. Most other hardware components source from the |
||||
clock generators, but a few (like the ARM or HDMI) will source from |
||||
the PLL dividers directly. |
||||
|
||||
Required properties: |
||||
- compatible: Should be "brcm,bcm2835-cprman" |
||||
- #clock-cells: Should be <1>. The permitted clock-specifier values can be |
||||
found in include/dt-bindings/clock/bcm2835.h |
||||
- reg: Specifies base physical address and size of the registers |
||||
- clocks: The external oscillator clock phandle |
||||
|
||||
Example: |
||||
|
||||
clk_osc: clock@3 { |
||||
compatible = "fixed-clock"; |
||||
reg = <3>; |
||||
#clock-cells = <0>; |
||||
clock-output-names = "osc"; |
||||
clock-frequency = <19200000>; |
||||
}; |
||||
|
||||
clocks: cprman@7e101000 { |
||||
compatible = "brcm,bcm2835-cprman"; |
||||
#clock-cells = <1>; |
||||
reg = <0x7e101000 0x2000>; |
||||
clocks = <&clk_osc>; |
||||
}; |
||||
|
||||
i2c0: i2c@7e205000 { |
||||
compatible = "brcm,bcm2835-i2c"; |
||||
reg = <0x7e205000 0x1000>; |
||||
interrupts = <2 21>; |
||||
clocks = <&clocks BCM2835_CLOCK_VPU>; |
||||
#address-cells = <1>; |
||||
#size-cells = <0>; |
||||
}; |
@ -0,0 +1,47 @@ |
||||
/*
|
||||
* Copyright (C) 2015 Broadcom Corporation |
||||
* |
||||
* This program is free software; you can redistribute it and/or |
||||
* modify it under the terms of the GNU General Public License as |
||||
* published by the Free Software Foundation version 2. |
||||
* |
||||
* This program is distributed "as is" WITHOUT ANY WARRANTY of any |
||||
* kind, whether express or implied; without even the implied warranty |
||||
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||||
* GNU General Public License for more details. |
||||
*/ |
||||
|
||||
#define BCM2835_PLLA 0 |
||||
#define BCM2835_PLLB 1 |
||||
#define BCM2835_PLLC 2 |
||||
#define BCM2835_PLLD 3 |
||||
#define BCM2835_PLLH 4 |
||||
|
||||
#define BCM2835_PLLA_CORE 5 |
||||
#define BCM2835_PLLA_PER 6 |
||||
#define BCM2835_PLLB_ARM 7 |
||||
#define BCM2835_PLLC_CORE0 8 |
||||
#define BCM2835_PLLC_CORE1 9 |
||||
#define BCM2835_PLLC_CORE2 10 |
||||
#define BCM2835_PLLC_PER 11 |
||||
#define BCM2835_PLLD_CORE 12 |
||||
#define BCM2835_PLLD_PER 13 |
||||
#define BCM2835_PLLH_RCAL 14 |
||||
#define BCM2835_PLLH_AUX 15 |
||||
#define BCM2835_PLLH_PIX 16 |
||||
|
||||
#define BCM2835_CLOCK_TIMER 17 |
||||
#define BCM2835_CLOCK_OTP 18 |
||||
#define BCM2835_CLOCK_UART 19 |
||||
#define BCM2835_CLOCK_VPU 20 |
||||
#define BCM2835_CLOCK_V3D 21 |
||||
#define BCM2835_CLOCK_ISP 22 |
||||
#define BCM2835_CLOCK_H264 23 |
||||
#define BCM2835_CLOCK_VEC 24 |
||||
#define BCM2835_CLOCK_HSM 25 |
||||
#define BCM2835_CLOCK_SDRAM 26 |
||||
#define BCM2835_CLOCK_TSENS 27 |
||||
#define BCM2835_CLOCK_EMMC 28 |
||||
#define BCM2835_CLOCK_PERI_IMAGE 29 |
||||
|
||||
#define BCM2835_CLOCK_COUNT 30 |
Loading…
Reference in new issue