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Message-ID: <YJAmdIHYl0DKsKyq@google.com>
Date: Mon, 3 May 2021 09:36:04 -0700
From: Matthias Kaehlcke <mka@...omium.org>
To: Sibi Sankar <sibis@...eaurora.org>
Cc: bjorn.andersson@...aro.org, viresh.kumar@...aro.org,
swboyd@...omium.org, agross@...nel.org, robh+dt@...nel.org,
rjw@...ysocki.net, linux-arm-msm@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-pm@...r.kernel.org, dianders@...omium.org
Subject: Re: [PATCH 2/2] arm64: dts: qcom: sc7280: Add cpu OPP tables
On Fri, Apr 30, 2021 at 07:58:21PM +0530, Sibi Sankar wrote:
> Add OPP tables required to scale DDR/L3 per freq-domain on SC7280 SoCs.
>
> Signed-off-by: Sibi Sankar <sibis@...eaurora.org>
> ---
> arch/arm64/boot/dts/qcom/sc7280.dtsi | 135 +++++++++++++++++++++++++++++++++++
> 1 file changed, 135 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index 0bb835aeae33..90220cecb368 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -7,6 +7,7 @@
>
> #include <dt-bindings/clock/qcom,gcc-sc7280.h>
> #include <dt-bindings/clock/qcom,rpmh.h>
> +#include <dt-bindings/interconnect/qcom,osm-l3.h>
> #include <dt-bindings/interconnect/qcom,sc7280.h>
> #include <dt-bindings/interrupt-controller/arm-gic.h>
> #include <dt-bindings/mailbox/qcom-ipcc.h>
> @@ -71,6 +72,9 @@
> &LITTLE_CPU_SLEEP_1
> &CLUSTER_SLEEP_0>;
> next-level-cache = <&L2_0>;
> + operating-points-v2 = <&cpu0_opp_table>;
> + interconnects = <&gem_noc MASTER_APPSS_PROC 3 &mc_virt SLAVE_EBI1 3>,
> + <&epss_l3 MASTER_EPSS_L3_APPS &epss_l3 SLAVE_EPSS_L3_SHARED>;
This patch seems to depend on the 'Add SC7280 interconnect provider
driver' series (https://patchwork.kernel.org/project/linux-arm-msm/list/?series=473747)
and 'Add L3 provider support for SC7280' (https://patchwork.kernel.org/project/linux-arm-msm/list/?series=468285),
none of them has landed yet. The dependencies should be mentioned in the
commit notes (under '---').
> qcom,freq-domain = <&cpufreq_hw 0>;
> L2_0: l2-cache {
> compatible = "cache";
> @@ -90,6 +94,9 @@
> &LITTLE_CPU_SLEEP_1
> &CLUSTER_SLEEP_0>;
> next-level-cache = <&L2_100>;
> + operating-points-v2 = <&cpu0_opp_table>;
> + interconnects = <&gem_noc MASTER_APPSS_PROC 3 &mc_virt SLAVE_EBI1 3>,
> + <&epss_l3 MASTER_EPSS_L3_APPS &epss_l3 SLAVE_EPSS_L3_SHARED>;
> qcom,freq-domain = <&cpufreq_hw 0>;
> L2_100: l2-cache {
> compatible = "cache";
> @@ -106,6 +113,9 @@
> &LITTLE_CPU_SLEEP_1
> &CLUSTER_SLEEP_0>;
> next-level-cache = <&L2_200>;
> + operating-points-v2 = <&cpu0_opp_table>;
> + interconnects = <&gem_noc MASTER_APPSS_PROC 3 &mc_virt SLAVE_EBI1 3>,
> + <&epss_l3 MASTER_EPSS_L3_APPS &epss_l3 SLAVE_EPSS_L3_SHARED>;
> qcom,freq-domain = <&cpufreq_hw 0>;
> L2_200: l2-cache {
> compatible = "cache";
> @@ -122,6 +132,9 @@
> &LITTLE_CPU_SLEEP_1
> &CLUSTER_SLEEP_0>;
> next-level-cache = <&L2_300>;
> + operating-points-v2 = <&cpu0_opp_table>;
> + interconnects = <&gem_noc MASTER_APPSS_PROC 3 &mc_virt SLAVE_EBI1 3>,
> + <&epss_l3 MASTER_EPSS_L3_APPS &epss_l3 SLAVE_EPSS_L3_SHARED>;
> qcom,freq-domain = <&cpufreq_hw 0>;
> L2_300: l2-cache {
> compatible = "cache";
> @@ -138,6 +151,9 @@
> &BIG_CPU_SLEEP_1
> &CLUSTER_SLEEP_0>;
> next-level-cache = <&L2_400>;
> + operating-points-v2 = <&cpu4_opp_table>;
> + interconnects = <&gem_noc MASTER_APPSS_PROC 3 &mc_virt SLAVE_EBI1 3>,
> + <&epss_l3 MASTER_EPSS_L3_APPS &epss_l3 SLAVE_EPSS_L3_SHARED>;
> qcom,freq-domain = <&cpufreq_hw 1>;
> L2_400: l2-cache {
> compatible = "cache";
> @@ -154,6 +170,9 @@
> &BIG_CPU_SLEEP_1
> &CLUSTER_SLEEP_0>;
> next-level-cache = <&L2_500>;
> + operating-points-v2 = <&cpu4_opp_table>;
> + interconnects = <&gem_noc MASTER_APPSS_PROC 3 &mc_virt SLAVE_EBI1 3>,
> + <&epss_l3 MASTER_EPSS_L3_APPS &epss_l3 SLAVE_EPSS_L3_SHARED>;
> qcom,freq-domain = <&cpufreq_hw 1>;
> L2_500: l2-cache {
> compatible = "cache";
> @@ -170,6 +189,9 @@
> &BIG_CPU_SLEEP_1
> &CLUSTER_SLEEP_0>;
> next-level-cache = <&L2_600>;
> + operating-points-v2 = <&cpu4_opp_table>;
> + interconnects = <&gem_noc MASTER_APPSS_PROC 3 &mc_virt SLAVE_EBI1 3>,
> + <&epss_l3 MASTER_EPSS_L3_APPS &epss_l3 SLAVE_EPSS_L3_SHARED>;
> qcom,freq-domain = <&cpufreq_hw 1>;
> L2_600: l2-cache {
> compatible = "cache";
> @@ -186,6 +208,9 @@
> &BIG_CPU_SLEEP_1
> &CLUSTER_SLEEP_0>;
> next-level-cache = <&L2_700>;
> + operating-points-v2 = <&cpu4_opp_table>;
> + interconnects = <&gem_noc MASTER_APPSS_PROC 3 &mc_virt SLAVE_EBI1 3>,
> + <&epss_l3 MASTER_EPSS_L3_APPS &epss_l3 SLAVE_EPSS_L3_SHARED>;
> qcom,freq-domain = <&cpufreq_hw 2>;
> L2_700: l2-cache {
> compatible = "cache";
> @@ -248,6 +273,116 @@
> };
> };
>
> + cpu0_opp_table: cpu0_opp_table {
the node name should use dashes as separators instead of underscores, i.e.
it should be 'cpu0-opp-table'.
> + compatible = "operating-points-v2";
> + opp-shared;
> +
> + cpu0_opp1: opp-300000000 {
> + opp-hz = /bits/ 64 <300000000>;
> + opp-peak-kBps = <800000 9600000>;
> + };
> +
> + cpu0_opp2: opp-691200000 {
> + opp-hz = /bits/ 64 <691200000>;
> + opp-peak-kBps = <800000 17817600>;
> + };
> +
> + cpu0_opp3: opp-806400000 {
> + opp-hz = /bits/ 64 <806400000>;
> + opp-peak-kBps = <800000 20889600>;
> + };
> +
> + cpu0_opp4: opp-940800000 {
> + opp-hz = /bits/ 64 <940800000>;
> + opp-peak-kBps = <1804000 24576000>;
> + };
> +
> + cpu0_opp5: opp-1152000000 {
> + opp-hz = /bits/ 64 <1152000000>;
> + opp-peak-kBps = <2188000 27033600>;
> + };
> +
> + cpu0_opp6: opp-1324800000 {
> + opp-hz = /bits/ 64 <1324800000>;
> + opp-peak-kBps = <2188000 33792000>;
> + };
> +
> + cpu0_opp7: opp-1516800000 {
> + opp-hz = /bits/ 64 <1516800000>;
> + opp-peak-kBps = <3072000 38092800>;
> + };
> +
> + cpu0_opp8: opp-1651200000 {
> + opp-hz = /bits/ 64 <1651200000>;
> + opp-peak-kBps = <3072000 41779200>;
> + };
> +
> + cpu0_opp9: opp-1804800000 {
> + opp-hz = /bits/ 64 <1804800000>;
> + opp-peak-kBps = <4068000 48537600>;
> + };
> +
> + cpu0_opp10: opp-1958400000 {
> + opp-hz = /bits/ 64 <1958400000>;
> + opp-peak-kBps = <4068000 48537600>;
> + };
> + };
> +
> + cpu4_opp_table: cpu4_opp_table {
node name should be 'cpu4-opp-table'
> + compatible = "operating-points-v2";
> + opp-shared;
> +
> + cpu4_opp1: opp-691200000 {
> + opp-hz = /bits/ 64 <691200000>;
> + opp-peak-kBps = <1804000 9600000>;
> + };
> +
> + cpu4_opp2: opp-940800000 {
> + opp-hz = /bits/ 64 <940800000>;
> + opp-peak-kBps = <2188000 17817600>;
> + };
> +
> + cpu4_opp3: opp-1228800000 {
> + opp-hz = /bits/ 64 <1228800000>;
> + opp-peak-kBps = <4068000 24576000>;
> + };
> +
> + cpu4_opp4: opp-1344000000 {
> + opp-hz = /bits/ 64 <1344000000>;
> + opp-peak-kBps = <4068000 24576000>;
> + };
> +
> + cpu4_opp5: opp-1516800000 {
> + opp-hz = /bits/ 64 <1516800000>;
> + opp-peak-kBps = <4068000 24576000>;
> + };
> +
> + cpu4_opp6: opp-1651200000 {
> + opp-hz = /bits/ 64 <1651200000>;
> + opp-peak-kBps = <6220000 38092800>;
> + };
> +
> + cpu4_opp7: opp-1900800000 {
> + opp-hz = /bits/ 64 <1900800000>;
> + opp-peak-kBps = <6220000 44851200>;
> + };
> +
> + cpu4_opp8: opp-2054400000 {
> + opp-hz = /bits/ 64 <2054400000>;
> + opp-peak-kBps = <6220000 44851200>;
> + };
> +
> + cpu4_opp9: opp-2131200000 {
> + opp-hz = /bits/ 64 <2131200000>;
> + opp-peak-kBps = <6220000 44851200>;
> + };
> +
> + cpu4_opp10: opp-2400000000 {
> + opp-hz = /bits/ 64 <2400000000>;
> + opp-peak-kBps = <6832000 48537600>;
> + };
> + };
> +
> memory@...00000 {
> device_type = "memory";
> /* We expect the bootloader to fill in the size */
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