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dts: arm: st: stm32: add health configuration support

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Some STM32 series need to configure health test register
for proper RNG behavior.
In addition, some also require to write a Magic number
before writing the configuration.
Note: on stm32h7 not all product lines support this configuration.

Signed-off-by: Alexandre Bourdiol <alexandre.bourdiol@st.com>
This commit is contained in:
Alexandre Bourdiol 2021-12-14 10:23:47 +01:00 committed by Carles Cufí
parent dc3b2321f3
commit a2035cd2f4
5 changed files with 15 additions and 0 deletions
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5
dts/arm/st/h7/stm32h723.dtsi
View File

@ -35,6 +35,11 @@
dmamux1: dmamux@40020800 {
dma-requests= <129>;
};
rng: rng@48021800 {
health-test-magic = <0x17590abc>;
health-test-config = <0xaa74>;
};
};
/* DTCM memory directly coppled to CPU */

5
dts/arm/st/h7/stm32h735.dtsi
View File

@ -44,6 +44,11 @@
status = "disabled";
label = "CRYP";
};
rng: rng@48021800 {
health-test-magic = <0x17590abc>;
health-test-config = <0xaa74>;
};
};
/* System data RAM accessible over AXI bus: AXI SRAM in D1 domain */

2
dts/arm/st/l5/stm32l5.dtsi
View File

@ -393,6 +393,8 @@
reg = <0x420c0800 0x400>;
interrupts = <94 0>;
clocks = <&rcc STM32_CLOCK_BUS_AHB2 0x00040000>;
health-test-magic = <0x17590abc>;
health-test-config = <0xa2b3>;
status = "disabled";
label = "RNG";
};

1
dts/arm/st/u5/stm32u5.dtsi
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@ -346,6 +346,7 @@
reg = <0x420c0800 0x400>;
clocks = <&rcc STM32_CLOCK_BUS_AHB2 0x00040000>;
interrupts = <94 0>;
health-test-config = <0x9aae>;
status = "disabled";
label = "RNG";
};

2
dts/arm/st/wl/stm32wl.dtsi
View File

@ -407,6 +407,8 @@
reg = <0x58001000 0x400>;
interrupts = <52 0>;
clocks = <&rcc STM32_CLOCK_BUS_AHB3 0x00040000>;
health-test-magic = <0x17590abc>;
health-test-config = <0xaa74>;
status = "disabled";
label = "RNG";
};