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arm64: dts: imx8m: add cache info

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i.MX8M Family use A53 Cores and has 32KB ICache with 32KB DCache.
 - Icache is 2-way set associative
 - Dcache is 4-way set associative
 - L2cache is 16-way set associative
 - Line size are 64bytes

Except i.MX8MQ has 1MB L2 Cache, others has 512KB L2 Cache.

So add the cache info in device tree and let use could see that
from /sys/devices/system/cpu/cpu[x]/cache/

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Peng Fan 2021-11-12 14:26:02 +08:00 committed by Shawn Guo
parent c190510714
commit cb551b5e3b
4 changed files with 112 additions and 0 deletions
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28
arch/arm64/boot/dts/freescale/imx8mm.dtsi
View file

@ -65,6 +65,12 @@ A53_0: cpu@0 {
clock-latency = <61036>; /* two CLK32 periods */
clocks = <&clk IMX8MM_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
operating-points-v2 = <&a53_opp_table>;
nvmem-cells = <&cpu_speed_grade>;
@ -80,6 +86,12 @@ A53_1: cpu@1 {
clock-latency = <61036>; /* two CLK32 periods */
clocks = <&clk IMX8MM_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
operating-points-v2 = <&a53_opp_table>;
cpu-idle-states = <&cpu_pd_wait>;
@ -93,6 +105,12 @@ A53_2: cpu@2 {
clock-latency = <61036>; /* two CLK32 periods */
clocks = <&clk IMX8MM_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
operating-points-v2 = <&a53_opp_table>;
cpu-idle-states = <&cpu_pd_wait>;
@ -106,6 +124,12 @@ A53_3: cpu@3 {
clock-latency = <61036>; /* two CLK32 periods */
clocks = <&clk IMX8MM_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
operating-points-v2 = <&a53_opp_table>;
cpu-idle-states = <&cpu_pd_wait>;
@ -114,6 +138,10 @@ A53_3: cpu@3 {
A53_L2: l2-cache0 {
compatible = "cache";
cache-level = <2>;
cache-size = <0x80000>;
cache-line-size = <64>;
cache-sets = <512>;
};
};

28
arch/arm64/boot/dts/freescale/imx8mn.dtsi
View file

@ -63,6 +63,12 @@ A53_0: cpu@0 {
clock-latency = <61036>;
clocks = <&clk IMX8MN_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
operating-points-v2 = <&a53_opp_table>;
nvmem-cells = <&cpu_speed_grade>;
@ -78,6 +84,12 @@ A53_1: cpu@1 {
clock-latency = <61036>;
clocks = <&clk IMX8MN_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
operating-points-v2 = <&a53_opp_table>;
cpu-idle-states = <&cpu_pd_wait>;
@ -91,6 +103,12 @@ A53_2: cpu@2 {
clock-latency = <61036>;
clocks = <&clk IMX8MN_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
operating-points-v2 = <&a53_opp_table>;
cpu-idle-states = <&cpu_pd_wait>;
@ -104,6 +122,12 @@ A53_3: cpu@3 {
clock-latency = <61036>;
clocks = <&clk IMX8MN_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
operating-points-v2 = <&a53_opp_table>;
cpu-idle-states = <&cpu_pd_wait>;
@ -112,6 +136,10 @@ A53_3: cpu@3 {
A53_L2: l2-cache0 {
compatible = "cache";
cache-level = <2>;
cache-size = <0x80000>;
cache-line-size = <64>;
cache-sets = <512>;
};
};

28
arch/arm64/boot/dts/freescale/imx8mp.dtsi
View file

@ -51,6 +51,12 @@ A53_0: cpu@0 {
clock-latency = <61036>;
clocks = <&clk IMX8MP_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
#cooling-cells = <2>;
};
@ -62,6 +68,12 @@ A53_1: cpu@1 {
clock-latency = <61036>;
clocks = <&clk IMX8MP_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
#cooling-cells = <2>;
};
@ -73,6 +85,12 @@ A53_2: cpu@2 {
clock-latency = <61036>;
clocks = <&clk IMX8MP_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
#cooling-cells = <2>;
};
@ -84,12 +102,22 @@ A53_3: cpu@3 {
clock-latency = <61036>;
clocks = <&clk IMX8MP_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
#cooling-cells = <2>;
};
A53_L2: l2-cache0 {
compatible = "cache";
cache-level = <2>;
cache-size = <0x80000>;
cache-line-size = <64>;
cache-sets = <512>;
};
};

28
arch/arm64/boot/dts/freescale/imx8mq.dtsi
View file

@ -102,6 +102,12 @@ A53_0: cpu@0 {
clock-latency = <61036>; /* two CLK32 periods */
clocks = <&clk IMX8MQ_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
operating-points-v2 = <&a53_opp_table>;
#cooling-cells = <2>;
@ -116,6 +122,12 @@ A53_1: cpu@1 {
clock-latency = <61036>; /* two CLK32 periods */
clocks = <&clk IMX8MQ_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
operating-points-v2 = <&a53_opp_table>;
#cooling-cells = <2>;
@ -128,6 +140,12 @@ A53_2: cpu@2 {
clock-latency = <61036>; /* two CLK32 periods */
clocks = <&clk IMX8MQ_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
operating-points-v2 = <&a53_opp_table>;
#cooling-cells = <2>;
@ -140,6 +158,12 @@ A53_3: cpu@3 {
clock-latency = <61036>; /* two CLK32 periods */
clocks = <&clk IMX8MQ_CLK_ARM>;
enable-method = "psci";
i-cache-size = <0x8000>;
i-cache-line-size = <64>;
i-cache-sets = <256>;
d-cache-size = <0x8000>;
d-cache-line-size = <64>;
d-cache-sets = <128>;
next-level-cache = <&A53_L2>;
operating-points-v2 = <&a53_opp_table>;
#cooling-cells = <2>;
@ -147,6 +171,10 @@ A53_3: cpu@3 {
A53_L2: l2-cache0 {
compatible = "cache";
cache-level = <2>;
cache-size = <0x100000>;
cache-line-size = <64>;
cache-sets = <1024>;
};
};