On Fri, December 4, 2015 21:04, Simon Arlott wrote:
> On Fri, December 4, 2015 14:30, Rob Herring wrote:
>> On Mon, Nov 30, 2015 at 08:52:55PM +0000, Simon Arlott wrote:
>>> +periph_clk: periph_clk {
>>> + compatible = "brcm,bcm63168-gate-clk", "brcm,bcm63xx-gate-clk";
>>> + regmap = <&periph_cntl>;
>>
>> What else is in periph_cntrl? Could this all just be part of that node?
>
> uint32 RevID; /* (00) word 0 */
> uint32 blkEnables; /* (04) word 1 */ <-- gated clocks
> uint32 pll_control; /* (08) word 2 */ <-- system reset controller bit
> uint32 deviceTimeoutEn; /* (0c) word 3 */ <-- unknown
> uint32 softResetB; /* (10) word 4 */ <-- device reset controller bits
> uint32 diagControl; /* (14) word 5 */ <-- unknown
> uint32 ExtIrqCfg; /* (18) word 6*/ <-- external interrupt controller
> uint32 unused1; /* (1c) word 7 */ <-- (external interrupt controller?)
> IrqControl_t IrqControl[3]; /* (20) (40) (60) */ <-- normal interrupt controller
On the BCM6368 [1], blkEnables also conatains a power domain bit:
uint32 blkEnables; /* (04) word 1 */
#define USBH_IDDQ_EN (1 << 19)
#define IPSEC_CLK_EN (1 << 18)
#define NAND_CLK_EN (1 << 17)
#define DISABLE_GLESS (1 << 16)
#define USBH_CLK_EN (1 << 15)
#define PCM_CLK_EN (1 << 14)
#define UTOPIA_CLK_EN (1 << 13)
#define ROBOSW_CLK_EN (1 << 12)
#define SAR_CLK_EN (1 << 11)
#define USBD_CLK_EN (1 << 10)
#define SPI_CLK_EN (1 << 9)
#define SWPKT_SAR_CLK_EN (1 << 8)
#define SWPKT_USB_CLK_EN (1 << 7)
#define PHYMIPS_CLK_EN (1 << 6)
#define VDSL_CLK_EN (1 << 5)
#define VDSL_BONDING_EN (1 << 4)
#define VDSL_AFE_EN (1 << 3)
#define VDSL_QPROC_EN (1 << 2)
In order to be able to map these to devices for the BCM63xx SoCs I'm going
to define the power controller binding with "power-domain-indices" and
"power-domain-names" to mirror the clock binding. The separate clk and
generic_pm_domain devices will then handle set/clear of the relevant bits
using the regmap.
[1]
https://code.google.com/p/gfiber-gflt100/source/browse/shared/opensource/include/bcm963xx/6368_map_part.h?r=b292e8c271addbda62104bece90e3c8018714194
--
Simon Arlott
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