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arm64: dts: rockchip: Add CPU/memory regulator coupling for 2 RK3588 boards

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RK3588 chips allow for their CPU cores to be powered by a different
supply vs. their corresponding memory interfaces, and two of the
boards currently upstream do that (EVB1 and QuartzPro64).

The voltage of the memory interface though has to match that of the
CPU cores that use it, which downstream kernels achieve by the means
of a custom cpufreq driver which adjusts both at the same time.

It seems that regulator coupling is a more appropriate generic
interface for it, so this patch introduces coupling to affected
device trees to ensure that memory interface voltage is also updated
whenever cpufreq switches between CPU OPPs.

Note that other boards, such as Radxa Rock 5B, define both the CPU
and memory interface regulators as aliases to the same DT node, so
this doesn't apply there.

Signed-off-by: Alexey Charkov <alchark@gmail.com>
Link: https://lore.kernel.org/r/20240617-rk-dts-additions-v5-5-c1f5f3267f1e@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Alexey Charkov 2024-06-17 22:28:55 +04:00 committed by Heiko Stuebner
parent 060c195003
commit 0ba0560982
2 changed files with 24 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts
View File

@ -878,6 +878,8 @@
vdd_cpu_big1_s0: dcdc-reg1 {
regulator-always-on;
regulator-boot-on;
regulator-coupled-with = <&vdd_cpu_big1_mem_s0>;
regulator-coupled-max-spread = <10000>;
regulator-min-microvolt = <550000>;
regulator-max-microvolt = <1050000>;
regulator-ramp-delay = <12500>;
@ -890,6 +892,8 @@
vdd_cpu_big0_s0: dcdc-reg2 {
regulator-always-on;
regulator-boot-on;
regulator-coupled-with = <&vdd_cpu_big0_mem_s0>;
regulator-coupled-max-spread = <10000>;
regulator-min-microvolt = <550000>;
regulator-max-microvolt = <1050000>;
regulator-ramp-delay = <12500>;
@ -902,6 +906,8 @@
vdd_cpu_lit_s0: dcdc-reg3 {
regulator-always-on;
regulator-boot-on;
regulator-coupled-with = <&vdd_cpu_lit_mem_s0>;
regulator-coupled-max-spread = <10000>;
regulator-min-microvolt = <550000>;
regulator-max-microvolt = <950000>;
regulator-ramp-delay = <12500>;
@ -926,6 +932,8 @@
vdd_cpu_big1_mem_s0: dcdc-reg5 {
regulator-always-on;
regulator-boot-on;
regulator-coupled-with = <&vdd_cpu_big1_s0>;
regulator-coupled-max-spread = <10000>;
regulator-min-microvolt = <675000>;
regulator-max-microvolt = <1050000>;
regulator-ramp-delay = <12500>;
@ -939,6 +947,8 @@
vdd_cpu_big0_mem_s0: dcdc-reg6 {
regulator-always-on;
regulator-boot-on;
regulator-coupled-with = <&vdd_cpu_big0_s0>;
regulator-coupled-max-spread = <10000>;
regulator-min-microvolt = <675000>;
regulator-max-microvolt = <1050000>;
regulator-ramp-delay = <12500>;
@ -963,6 +973,8 @@
vdd_cpu_lit_mem_s0: dcdc-reg8 {
regulator-always-on;
regulator-boot-on;
regulator-coupled-with = <&vdd_cpu_lit_s0>;
regulator-coupled-max-spread = <10000>;
regulator-min-microvolt = <675000>;
regulator-max-microvolt = <950000>;
regulator-ramp-delay = <12500>;

12
arch/arm64/boot/dts/rockchip/rk3588-quartzpro64.dts
View File

@ -832,6 +832,8 @@
regulator-name = "vdd_cpu_big1_s0";
regulator-always-on;
regulator-boot-on;
regulator-coupled-with = <&vdd_cpu_big1_mem_s0>;
regulator-coupled-max-spread = <10000>;
regulator-min-microvolt = <550000>;
regulator-max-microvolt = <1050000>;
regulator-ramp-delay = <12500>;
@ -845,6 +847,8 @@
regulator-name = "vdd_cpu_big0_s0";
regulator-always-on;
regulator-boot-on;
regulator-coupled-with = <&vdd_cpu_big0_mem_s0>;
regulator-coupled-max-spread = <10000>;
regulator-min-microvolt = <550000>;
regulator-max-microvolt = <1050000>;
regulator-ramp-delay = <12500>;
@ -858,6 +862,8 @@
regulator-name = "vdd_cpu_lit_s0";
regulator-always-on;
regulator-boot-on;
regulator-coupled-with = <&vdd_cpu_lit_mem_s0>;
regulator-coupled-max-spread = <10000>;
regulator-min-microvolt = <550000>;
regulator-max-microvolt = <950000>;
regulator-ramp-delay = <12500>;
@ -884,6 +890,8 @@
regulator-name = "vdd_cpu_big1_mem_s0";
regulator-always-on;
regulator-boot-on;
regulator-coupled-with = <&vdd_cpu_big1_s0>;
regulator-coupled-max-spread = <10000>;
regulator-min-microvolt = <675000>;
regulator-max-microvolt = <1050000>;
regulator-ramp-delay = <12500>;
@ -898,6 +906,8 @@
regulator-name = "vdd_cpu_big0_mem_s0";
regulator-always-on;
regulator-boot-on;
regulator-coupled-with = <&vdd_cpu_big0_s0>;
regulator-coupled-max-spread = <10000>;
regulator-min-microvolt = <675000>;
regulator-max-microvolt = <1050000>;
regulator-ramp-delay = <12500>;
@ -924,6 +934,8 @@
regulator-name = "vdd_cpu_lit_mem_s0";
regulator-always-on;
regulator-boot-on;
regulator-coupled-with = <&vdd_cpu_lit_s0>;
regulator-coupled-max-spread = <10000>;
regulator-min-microvolt = <675000>;
regulator-max-microvolt = <950000>;
regulator-ramp-delay = <12500>;