Re: [PATCH] arm64: dts: rockchip: Remove overdrive-mode OPPs from RK3588J SoC dtsi
From: Quentin Schulz
Date: Mon Mar 24 2025 - 06:21:06 EST
Hi Dragan,
On 3/24/25 10:53 AM, Dragan Simic wrote:
Hello Quentin,
On 2025-03-24 10:23, Quentin Schulz wrote:
On 3/23/25 11:19 AM, Dragan Simic wrote:
On 2025-03-21 10:53, Quentin Schulz wrote:
On 3/21/25 4:28 AM, Dragan Simic wrote:
The differences in the vendor-approved CPU and GPU OPPs for the
standard
Rockchip RK3588 variant [1] and the industrial Rockchip RK3588J
variant [2]
come from the latter, presumably, supporting an extended
temperature range
that's usually associated with industrial applications, despite the
two SoC
variant datasheets specifying the same upper limit for the allowed
ambient
temperature for both variants. However, the lower temperature
limit is
RK3588 is rated for 0-80°C, RK3588J for -40-85°C, c.f. Recommended
Operating Conditions, Table 3-2, Ambient Operating Temperature.
Indeed, which is why I specifically wrote "specifying the same upper
limit", because having a lower negative temperature limit could hardly
put the RK3588J in danger of overheating or running hotter. :)
"""
despite the two SoC variant datasheets specifying the same upper limit
for the allowed temperature for both variants
"""
is incorrect. The whole range is different, yes it's only a 5°C
difference for the upper limit, but they still are different.
I just commented on this separately, with a couple of datasheet
screenshots, before I saw your latest response. Please, have
a look at that message.
I see, I had a v1.3 datasheet opened:
https://github.com/FanX-Tek/rk3588-TRM-and-Datasheet/blob/master/Rockchip_RK3588_Datasheet_V1.3-20220328.pdf
Interestingly, it seems the RK3588S (still?) has a smaller operating range:
https://www.armboard.cn/download/Rockchip_RK3588S_Datasheet_V1.6-20240821.pdf
Cheers,
Quentin