arm64: dts: qcom: sm8250: Add BWMONs

Add the CPU and LLC BWMONs (skip the NPU ones for now) on sm8250.

LPDDR4X levels are skipped, as LPDDR5 seems more popular with SM8250 and
voting for inexistent levels doesn't uptick the bus frequency, which
results in no increased bandwidth, which results in bwmon deciding we
shouldn't go higher.. you see the point!

Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20230711-topic-sm638250_bwmon-v1-3-bd4bb96b0673@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

diff --git a/arch/arm64/boot/dts/qcom/sm8250.dtsi b/arch/arm64/boot/dts/qcom/sm8250.dtsi
index 6359e5d..c4e4f75 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sm8250.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8250.dtsi
@@ -3694,6 +3694,128 @@
                        };
                };
 
+               pmu@9091000 {
+                       compatible = "qcom,sm8250-llcc-bwmon", "qcom,sc7280-llcc-bwmon";
+                       reg = <0 0x09091000 0 0x1000>;
+
+                       interrupts = <GIC_SPI 81 IRQ_TYPE_LEVEL_HIGH>;
+
+                       interconnects = <&mc_virt MASTER_LLCC 3 &mc_virt SLAVE_EBI_CH0 3>;
+
+                       operating-points-v2 = <&llcc_bwmon_opp_table>;
+
+                       llcc_bwmon_opp_table: opp-table {
+                               compatible = "operating-points-v2";
+
+                               opp-800000 {
+                                       opp-peak-kBps = <(200 * 4 * 1000)>;
+                               };
+
+                               opp-1200000 {
+                                       opp-peak-kBps = <(300 * 4 * 1000)>;
+                               };
+
+                               opp-1804000 {
+                                       opp-peak-kBps = <(451 * 4 * 1000)>;
+                               };
+
+                               opp-2188000 {
+                                       opp-peak-kBps = <(547 * 4 * 1000)>;
+                               };
+
+                               opp-2724000 {
+                                       opp-peak-kBps = <(681 * 4 * 1000)>;
+                               };
+
+                               opp-3072000 {
+                                       opp-peak-kBps = <(768 * 4 * 1000)>;
+                               };
+
+                               opp-4068000 {
+                                       opp-peak-kBps = <(1017 * 4 * 1000)>;
+                               };
+
+                               /* 1353 MHz, LPDDR4X */
+
+                               opp-6220000 {
+                                       opp-peak-kBps = <(1555 * 4 * 1000)>;
+                               };
+
+                               opp-7216000 {
+                                       opp-peak-kBps = <(1804 * 4 * 1000)>;
+                               };
+
+                               opp-8368000 {
+                                       opp-peak-kBps = <(2092 * 4 * 1000)>;
+                               };
+
+                               /* LPDDR5 */
+                               opp-10944000 {
+                                       opp-peak-kBps = <(2736 * 4 * 1000)>;
+                               };
+                       };
+               };
+
+               pmu@90b6400 {
+                       compatible = "qcom,sm8250-cpu-bwmon", "qcom,sdm845-bwmon";
+                       reg = <0 0x090b6400 0 0x600>;
+
+                       interrupts = <GIC_SPI 581 IRQ_TYPE_LEVEL_HIGH>;
+
+                       interconnects = <&gem_noc MASTER_AMPSS_M0 3 &gem_noc SLAVE_LLCC 3>;
+                       operating-points-v2 = <&cpu_bwmon_opp_table>;
+
+                       cpu_bwmon_opp_table: opp-table {
+                               compatible = "operating-points-v2";
+
+                               opp-800000 {
+                                       opp-peak-kBps = <(200 * 4 * 1000)>;
+                               };
+
+                               opp-1804000 {
+                                       opp-peak-kBps = <(451 * 4 * 1000)>;
+                               };
+
+                               opp-2188000 {
+                                       opp-peak-kBps = <(547 * 4 * 1000)>;
+                               };
+
+                               opp-2724000 {
+                                       opp-peak-kBps = <(681 * 4 * 1000)>;
+                               };
+
+                               opp-3072000 {
+                                       opp-peak-kBps = <(768 * 4 * 1000)>;
+                               };
+
+                               /* 1017MHz, 1353 MHz, LPDDR4X */
+
+                               opp-6220000 {
+                                       opp-peak-kBps = <(1555 * 4 * 1000)>;
+                               };
+
+                               opp-6832000 {
+                                       opp-peak-kBps = <(1708 * 4 * 1000)>;
+                               };
+
+                               opp-8368000 {
+                                       opp-peak-kBps = <(2092 * 4 * 1000)>;
+                               };
+
+                               /* 2133MHz, LPDDR4X */
+
+                               /* LPDDR5 */
+                               opp-10944000 {
+                                       opp-peak-kBps = <(2736 * 4 * 1000)>;
+                               };
+
+                               /* LPDDR5 */
+                               opp-12784000 {
+                                       opp-peak-kBps = <(3196 * 4 * 1000)>;
+                               };
+                       };
+               };
+
                dc_noc: interconnect@90c0000 {
                        compatible = "qcom,sm8250-dc-noc";
                        reg = <0 0x090c0000 0 0x4200>;