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Added 1.3ghz overlay for B variant RK3308 (#6348)

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Updated and improved RK3308 overlay README doc
Moved rock-s0.wip to .conf
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brentr 2024-03-03 22:39:07 -08:00 committed by GitHub
parent 1d31aac7a9
commit 58cf4e8fc8
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7 changed files with 122 additions and 24 deletions
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0
config/boards/rock-s0.wip → config/boards/rock-s0.conf
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3
patch/kernel/archive/rockchip64-6.6/overlay/Makefile
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@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
dtbo-$(CONFIG_ARCH_ROCKCHIP) += \
rk3308-s0-ext-antenna.dtbo \
rk3308-s0-ext-antenna.dtbo \
rk3308-b@1.3ghz.dtbo \
rk3308-bs.dtbo rk3308-bs@1.3ghz.dtbo \
rk3308-emmc.dtbo \
rk3308-sdio@10mhz.dtbo rk3308-sdio@4mhz.dtbo \

40
patch/kernel/archive/rockchip64-6.6/overlay/README.rockchip-overlays
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@ -193,20 +193,28 @@ wifi + bt chip and clones.
Enable additional cpu "high-speed" bins up to 1.3ghz
**********************************
Details for Rock Pi-S overlays (7 Oct 2022):
Details for Rock Pi-S overlays (2 Mar 2024):
V1.3 of the RockPi-S uses a the B-S variant of the RK3308 that is optimized
for lower core voltages than the older chips on the V1.2 and V1.1 boards.
All V1.3 boards should apply the
Older V1.1, V1.2, and those V1.3 boards produced during 2022 and 2023
use a the B-S variant of the RK3308 that is optimized for lower core voltages.
Per Radxa, these chips will be marked RK3308B-S instead of RK3308B
All boards utilizing the RK3308B-S part should apply the:
### rk3308-bs
overlay to lower the core voltages to reduce power consumption.
This also enables operation at 1.1Ghz.
Optionally, V1.3 boards may add the
Optionally, boards utilizing the RK3308B-S parts may add the
### rk3308-bs@1.3ghz
to overclock the B-S CPU to 1.3Ghz.
Add the rk3308bs-rock-pi-s-1.3Ghz overlay *after adding* rockchip-rk3308bs
According to Radxa, RockPI-S boards manufactured after after 2024 went back
to the RK3308B. I have found that many B suffix chips operate fine at the
lower voltage selected by the rk3308-bs* overlays. So, when in doubt, try
the rk3308-bs* overlays first. If operation is unstable, switch to the
rk3308-b* overlays. This will apply the minium CPU voltage necessary for
your SOC.
===========
Install the following overlays only on older (unpatched) mainline kernels:
@ -231,13 +239,19 @@ Note that older mainline kernels cannot drive the SDIO clock faster than 10Mhz.
**********************************
Details for Rock S 0 overlays (7 Feb 2024):
Note thaat rk3308-bs* overlays crash the s0 for some strange reason
So, the max CPU clock is currently limited to 1ghz :-(
(under investigation...)
Details for Rock S0 overlays (2 Mar 2024):
By default, the internal WiFi selects its internal chip antenna.
This antenna is so noisy as to be nearly unusable.
The external antenna, fortunately, works quite well.
Install an external WiFi antenna and select it with:
### rk3308-s0-ext-antenna
Select Rock S0's external WiFi antenna input
(instead of its internal WiFi antenna)
The internal antenna is very weak. Use an external one if convenient.
All Rock S0 boards use the RK3308B chip.
The:
### rk3308-bs@1.3ghz
overlay enables (overclocked) operation at 1.3ghz
1.3Ghz operation appears stable on the two boards I've tested.
The legacy kernel is not supported on the Rock S0

27
patch/kernel/archive/rockchip64-6.6/overlay/rk3308-b@1.3ghz.dts Normal file
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@ -0,0 +1,27 @@
//Overclock the Rockchip RK3308-B suffix SOC to 1.3 Ghz
// THIS SHOULD NOT BE APPLIED to RK3308-B-S suffix chips
// because is will overvolt them
/dts-v1/;
/plugin/;
/ {
fragment@0 {
target = <&cpu0_opp_table>;
__overlay__ {
//the following are unsupported, overclocked operating points
opp-1200000000 {
opp-hz = /bits/ 64 <1200000000>;
opp-microvolt = <1250000 1250000 1340000>;
clock-latency-ns = <40000>;
status = "okay";
};
opp-1296000000 {
opp-hz = /bits/ 64 <1296000000>;
opp-microvolt = <1300000 1300000 1340000>;
clock-latency-ns = <40000>;
status = "okay";
};
};
};
};

3
patch/kernel/archive/rockchip64-6.7/overlay/Makefile
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@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
dtbo-$(CONFIG_ARCH_ROCKCHIP) += \
rk3308-s0-ext-antenna.dtbo \
rk3308-s0-ext-antenna.dtbo \
rk3308-b@1.3ghz.dtbo \
rk3308-bs.dtbo rk3308-bs@1.3ghz.dtbo \
rk3308-emmc.dtbo \
rk3308-sdio@10mhz.dtbo rk3308-sdio@4mhz.dtbo \

46
patch/kernel/archive/rockchip64-6.7/overlay/README.rockchip-overlays
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@ -193,21 +193,32 @@ wifi + bt chip and clones.
Enable additional cpu "high-speed" bins up to 1.3ghz
**********************************
Details for Rock Pi-S overlays (7 Oct 2022):
Details for Rock Pi-S overlays (2 Mar 2024):
V1.3 of the RockPi-S uses a the B-S variant of the RK3308 that is optimized
for lower core voltages than the older chips on the V1.2 and V1.1 boards.
All V1.3 boards should apply the
Older V1.1 and V1.2 boards use the B variant of the RK3308.
Some V1.3 boards manufactured after October 2023 also use the B variant.
To overclock the RK3308B, apply:
### rk3308-b@1.3ghz
V1.3 boards produced during 2022 and most of 2023 use the lower voltage
B-S variant of the RK3308.
Per Radxa, these chips will be marked RK3308BS instead of RK3308B
All boards utilizing the RK3308B-S part should apply the:
### rk3308-bs
overlay to lower the core voltages to reduce power consumption.
This also enables operation at 1.1Ghz.
overlay to operate at the appropriate (lower) the core voltage.
This overlay also enables operation at 1.1Ghz.
Optionally, V1.3 boards may add the
Optionally, boards utilizing the RK3308B-S parts may add the
### rk3308-bs@1.3ghz
to overclock the B-S CPU to 1.3Ghz.
Add the rk3308bs-rock-pi-s-1.3Ghz overlay *after adding* rockchip-rk3308bs
Apply the rk3308-bs@1.3Ghz overlay *after applying* rk3308-bs
===========
Applying the *-bs overlays to the B variant of the SOC may result in
unstable operation due to undervolting.
Applying the rk3308-b@1.3ghz to a BS variant chip consumes more power and
has the potential to damage the SOC due to overvolting.
===== For Older Kernels ======
Install the following overlays only on older (unpatched) mainline kernels:
Older mainline kernels disable the Rock Pi S built-in SDNAND (EMMC)
@ -228,3 +239,20 @@ increases the SDIO clock to only 4Mhz, providing about 1MB/s WiFi throughput.
use this only if 10Mhz SDIO clock is unstable
Note that older mainline kernels cannot drive the SDIO clock faster than 10Mhz.
**********************************
Details for Rock S0 overlays (2 Mar 2024):
By default, the internal WiFi uses its internal chip antenna.
Almost any external antenna will improve WiFi performance over the internal one.
Install an external WiFi antenna and select it by applying the overlay:
### rk3308-s0-ext-antenna
All Rock S0 boards use the RK3308B chip.
So, applying the overlay:
### rk3308-b@1.3ghz
enables (overclocked) operation at 1.3ghz
The legacy kernel is not supported on the Rock S0

27
patch/kernel/archive/rockchip64-6.7/overlay/rk3308-b@1.3ghz.dts Normal file
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@ -0,0 +1,27 @@
//Overclock the Rockchip RK3308-B suffix SOC to 1.3 Ghz
// THIS SHOULD NOT BE APPLIED to RK3308-B-S suffix chips
// because is will overvolt them
/dts-v1/;
/plugin/;
/ {
fragment@0 {
target = <&cpu0_opp_table>;
__overlay__ {
//the following are unsupported, overclocked operating points
opp-1200000000 {
opp-hz = /bits/ 64 <1200000000>;
opp-microvolt = <1250000 1250000 1340000>;
clock-latency-ns = <40000>;
status = "okay";
};
opp-1296000000 {
opp-hz = /bits/ 64 <1296000000>;
opp-microvolt = <1300000 1300000 1340000>;
clock-latency-ns = <40000>;
status = "okay";
};
};
};
};