Re: [PATCH v4 4/6] arm64: dts: rockchip: add core dtsi file for RK3328 SoCs

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 





On 04/05/2017 12:04 AM, Heiko Stuebner wrote:
Am Montag, 27. März 2017, 17:40:48 CEST schrieb cl@xxxxxxxxxxxxxx:
From: Liang Chen <cl@xxxxxxxxxxxxxx>

This patch adds core dtsi file for Rockchip RK3328 SoCs.

Signed-off-by: Liang Chen <cl@xxxxxxxxxxxxxx>

applied for 4.12, with the following list of changes:

- reorder some properties to bring them in alphabetical order
- dropped the status-disabled from the power-controller
   power-domain control is a quite essential part of the system, so if
   boards really want to disable them, they should do it in their board file
   Having power-domains on all the time, is also our default in all other
   devicetrees.
- removed #dma-cells from spi0 -> this is not a dma controller
- reword the cru assigned-clocks comment a bit
- fixed sdmmc1_bus4 pins, as indicated by Shawn and after looking up the
   correct pins in the manual


And a final question, are you sure about SCLK_PDM becoming a child of the
APLL in your cru assigned-clocks, as the APLL will vary later on with cpufreq
active?

the NPLL will vary later on with cpufreq active.

The NPLL is better than APLL, so NPLL is for clk_core,and apll is for pdm.

please see the TRM in CRU:
1.4 Function Description
/........./
To maximize the flexibility, some of clocks can select divider source from 5 PLLs. (Note: It’s recommended to use NEW PLL instead of ARM PLL as arm clock source, because NEW PLL is
near to ARM. And it’s jitter is better than ARM PLL).


Heiko




--
To unsubscribe from this list: send the line "unsubscribe linux-i2c" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux GPIO]     [Linux SPI]     [Linux Hardward Monitoring]     [LM Sensors]     [Linux USB Devel]     [Linux Media]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux