From: zhangqing@rock-chips•com (Elaine Zhang)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v4 4/6] arm64: dts: rockchip: add core dtsi file for RK3328 SoCs
Date: Wed, 05 Apr 2017 10:07:41 +0800 [thread overview]
Message-ID: <58E4516D.4000805@rock-chips.com> (raw)
In-Reply-To: <6636047.jL6XHNkknt@phil>
On 04/05/2017 12:04 AM, Heiko Stuebner wrote:
> Am Montag, 27. M?rz 2017, 17:40:48 CEST schrieb cl at rock-chips.com:
>> From: Liang Chen <cl@rock-chips•com>
>>
>> This patch adds core dtsi file for Rockchip RK3328 SoCs.
>>
>> Signed-off-by: Liang Chen <cl@rock-chips•com>
>
> 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
>
>
>
next prev parent reply other threads:[~2017-04-05 2:07 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-27 9:40 [PATCH v4 0/6] initialize dtsi file and dts file for RK3328 SoCs cl at rock-chips.com
2017-03-27 9:40 ` [PATCH v4 1/6] dt-bindings: iio: rockchip-saradc: add support for rk3328 cl at rock-chips.com
2017-03-27 13:25 ` Heiko Stuebner
2017-04-02 8:58 ` Jonathan Cameron
2017-03-27 9:40 ` [PATCH v4 3/6] dt-bindings: soc: rockchip: grf: " cl at rock-chips.com
2017-04-04 15:44 ` Heiko Stuebner
2017-03-27 9:40 ` [PATCH v4 4/6] arm64: dts: rockchip: add core dtsi file for RK3328 SoCs cl at rock-chips.com
2017-03-31 8:27 ` Shawn Lin
2017-04-04 16:04 ` Heiko Stuebner
2017-04-05 2:07 ` Elaine Zhang [this message]
2017-04-05 10:11 ` Heiko Stübner
2017-03-27 9:40 ` [PATCH v4 5/6] arm64: dts: rockchip: add dts file for RK3328 cl at rock-chips.com
2017-04-04 16:15 ` Heiko Stuebner
2017-03-27 9:46 ` [PATCH v4 6/6] dt-bindings: document rockchip rk3328-evb board cl at rock-chips.com
2017-04-04 16:10 ` Heiko Stuebner
2017-03-30 15:05 ` [PATCH v4 0/6] initialize dtsi file and dts file for RK3328 SoCs Wolfram Sang
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