Skip to content

Commit 82c69d7

Browse files
author
Natalie Ho
committed
update info structure per feedback
1 parent 5f6f6fa commit 82c69d7

File tree

2 files changed

+11
-5
lines changed

2 files changed

+11
-5
lines changed

documentation/asciidoc/computers/raspberry-pi/frequency-management.adoc

Lines changed: 10 additions & 4 deletions
Original file line numberDiff line numberDiff line change
@@ -59,16 +59,22 @@ Thanks to built-in throttling, heatsinks are not necessary to prevent overheatin
5959

6060
=== Fan cases
6161

62-
For the Raspberry Pi 4, you have the option of adding the https://www.raspberrypi.com/products/raspberry-pi-4-case-fan/[Raspberry Pi 4 Case Fan] to the lid of the Raspberry Pi 4 case.
62+
To ensure the best performance for your Raspberry Pi, use an active cooling solution such as a fan. Raspberry Pi firmware manages fan speeds for all official fans.
6363

64-
Raspberry Pi 5 has two official fan options to assist with cooling:
64+
==== Raspberry Pi 4 fan
65+
66+
For Raspberry Pi 4, add the https://www.raspberrypi.com/products/raspberry-pi-4-case-fan/[Raspberry Pi 4 Case Fan] to the lid of the Raspberry Pi 4 case.
67+
68+
==== Raspberry Pi 5 fans
69+
70+
For Raspberry Pi 5, use one of the official fan options:
6571

6672
* https://www.raspberrypi.com/products/active-cooler/[Active Cooler]
6773
* https://www.raspberrypi.com/products/raspberry-pi-5-case/[Case for Raspberry Pi 5]
6874

6975
Both of the Raspberry Pi 5 fan options plug into the four-pin JST-SH PWM fan connector located in the upper right of the board between the 40-pin GPIO header and the USB 2 ports. The fan connector pulls from the same current limit as USB peripherals. We recommend the Active Cooler case for overclockers, since it provides better cooling performance.
7076

71-
The fans of the Active Cooler and the Raspberry Pi 5 Case are both actively managed by Raspberry Pi firmware. As the temperature of the Raspberry Pi 5 increases, the fan reacts in the following way:
77+
As the temperature of the Raspberry Pi 5 increases, the fan reacts in the following way:
7278

7379
* below 50°C, the fan does not spin at all (0% speed)
7480
* at 50°C, the fan turns on at a low speed (30% speed)
@@ -80,7 +86,7 @@ Temperature decreases use the same mapping with a 5°C **hysteresis**; fan speed
8086

8187
At boot the fan is turned on, and the tachometer input is checked to see if the fan is spinning. If it is, then the `cooling_fan` device tree overlay is enabled. This overlay is in `bcm2712-rpi-5-b.dtb` by default, but with `status=disabled`.
8288

83-
==== Fan connector pinout
89+
==== Raspberry Pi 5 fan connector pinout
8490

8591
The Raspberry Pi 5 fan connector is a 1mm pitch JST-SH socket containing the following four pins:
8692

documentation/asciidoc/computers/raspberry-pi/introduction.adoc

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -189,7 +189,7 @@ a|
189189
* single-lane https://datasheets.raspberrypi.com/pcie/pcie-connector-standard.pdf[PCIe FFC connector]
190190
* https://datasheets.raspberrypi.com/debug/debug-connector-specification.pdf[UART connector]
191191
* RTC battery connector
192-
* xref:raspberry-pi.adoc#fan-connector-pinout[four-pin JST-SH PWM fan connector]
192+
* xref:raspberry-pi.adoc#raspberry-pi-5-fan-connector-pinout[four-pin JST-SH PWM fan connector]
193193
* PoE+-capable Gigabit Ethernet (1Gb/s)
194194
* 2.4/5GHz dual-band 802.11ac Wi-Fi 5 (300Mb/s)
195195
* Bluetooth 5, Bluetooth Low Energy (BLE)

0 commit comments

Comments
 (0)