[PATCH 0/3] Enable TRNG support

[PATCH 0/3] Enable TRNG support

[Md Sadre Alam]

This patch series enables support for Truly Random Number
Generators (TRNG) across various targets, including IPQ95xx,
IPQ32xx, and IPQ54xx.

Md Sadre Alam (3):
  arm64: dts: qcom: ipq5424: Add TRNG node
  arm64: dts: qcom: ipq9574: Enable TRNG instead PRNG
  arm64: dts: qcom: ipq5332: Enable TRNG instead of PRNG

 arch/arm64/boot/dts/qcom/ipq5332.dtsi | 2 +-
 arch/arm64/boot/dts/qcom/ipq5424.dtsi | 7 +++++++
 arch/arm64/boot/dts/qcom/ipq9574.dtsi | 2 +-
 3 files changed, 9 insertions(+), 2 deletions(-)

-- 
2.34.1

[PATCH 1/3] arm64: dts: qcom: ipq5424: Add TRNG node

[Md Sadre Alam]

add TRNG (Truly Random Number Generator) node for ipq5424

Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
---
 arch/arm64/boot/dts/qcom/ipq5424.dtsi | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/ipq5424.dtsi b/arch/arm64/boot/dts/qcom/ipq5424.dtsi
index 5e219f900412..c51879daa68c 100644
--- a/arch/arm64/boot/dts/qcom/ipq5424.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq5424.dtsi
@@ -145,6 +145,13 @@ soc@0 {
 		#size-cells = <2>;
 		ranges = <0 0 0 0 0x10 0>;
 
+		rng: rng@4c3000 {
+			compatible = "qcom,trng";
+			reg = <0 0x004c3000 0 0x1000>;
+			clocks = <&gcc GCC_PRNG_AHB_CLK>;
+			clock-names = "core";
+		};
+
 		tlmm: pinctrl@1000000 {
 			compatible = "qcom,ipq5424-tlmm";
 			reg = <0 0x01000000 0 0x300000>;
-- 
2.34.1

[PATCH 2/3] arm64: dts: qcom: ipq9574: Enable TRNG instead PRNG

[Md Sadre Alam]

RNG hardware versions greater than 3.0 are Truly
Random Number Generators (TRNG). In IPQ95xx RNG
block is TRNG. Update the corresponding compatible
property to ensure the hardware block is registered
with the hw_random framework, which feeds the Linux
entropy pool.

Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
---
 arch/arm64/boot/dts/qcom/ipq9574.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/ipq9574.dtsi b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
index d1fd35ebc4a2..db1afa0d5422 100644
--- a/arch/arm64/boot/dts/qcom/ipq9574.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
@@ -227,7 +227,7 @@ rpm_msg_ram: sram@60000 {
 		};
 
 		rng: rng@e3000 {
-			compatible = "qcom,prng-ee";
+			compatible = "qcom,trng";
 			reg = <0x000e3000 0x1000>;
 			clocks = <&gcc GCC_PRNG_AHB_CLK>;
 			clock-names = "core";
-- 
2.34.1

[PATCH 3/3] arm64: dts: qcom: ipq5332: Enable TRNG instead of PRNG

[Md Sadre Alam]

RNG hardware versions greater than 3.0 are Truly
Random Number Generators (TRNG). In IPQ53xx RNG
block is TRNG. Update the corresponding compatible
property to ensure the hardware block is registered
with the hw_random framework, which feeds the Linux
entropy pool.

Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
---
 arch/arm64/boot/dts/qcom/ipq5332.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/ipq5332.dtsi b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
index d3c3e215a15c..5e71c86c6935 100644
--- a/arch/arm64/boot/dts/qcom/ipq5332.dtsi
+++ b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
@@ -180,7 +180,7 @@ cpu_speed_bin: cpu-speed-bin@1d {
 		};
 
 		rng: rng@e3000 {
-			compatible = "qcom,prng-ee";
+			compatible = "qcom,trng";
 			reg = <0x000e3000 0x1000>;
 			clocks = <&gcc GCC_PRNG_AHB_CLK>;
 			clock-names = "core";
-- 
2.34.1

Re: [PATCH 0/3] Enable TRNG support

[Manikanta Mylavarapu]

On 12/6/2024 12:50 PM, Md Sadre Alam wrote:
> This patch series enables support for Truly Random Number
> Generators (TRNG) across various targets, including IPQ95xx,
> IPQ32xx, and IPQ54xx.
> 

It should be IPQ53xx, not IPQ32xx.

--Manikanta.

> Md Sadre Alam (3):
>   arm64: dts: qcom: ipq5424: Add TRNG node
>   arm64: dts: qcom: ipq9574: Enable TRNG instead PRNG
>   arm64: dts: qcom: ipq5332: Enable TRNG instead of PRNG
> 
>  arch/arm64/boot/dts/qcom/ipq5332.dtsi | 2 +-
>  arch/arm64/boot/dts/qcom/ipq5424.dtsi | 7 +++++++
>  arch/arm64/boot/dts/qcom/ipq9574.dtsi | 2 +-
>  3 files changed, 9 insertions(+), 2 deletions(-)
> 

Re: [PATCH 0/3] Enable TRNG support

[Md Sadre Alam]

On 12/6/2024 12:59 PM, Manikanta Mylavarapu wrote:
> 
> 
> On 12/6/2024 12:50 PM, Md Sadre Alam wrote:
>> This patch series enables support for Truly Random Number
>> Generators (TRNG) across various targets, including IPQ95xx,
>> IPQ32xx, and IPQ54xx.
>>
> 
> It should be IPQ53xx, not IPQ32xx.
Thank you for pointing that out. I'll address this in the next revision
> 
> --Manikanta.
> 
>> Md Sadre Alam (3):
>>    arm64: dts: qcom: ipq5424: Add TRNG node
>>    arm64: dts: qcom: ipq9574: Enable TRNG instead PRNG
>>    arm64: dts: qcom: ipq5332: Enable TRNG instead of PRNG
>>
>>   arch/arm64/boot/dts/qcom/ipq5332.dtsi | 2 +-
>>   arch/arm64/boot/dts/qcom/ipq5424.dtsi | 7 +++++++
>>   arch/arm64/boot/dts/qcom/ipq9574.dtsi | 2 +-
>>   3 files changed, 9 insertions(+), 2 deletions(-)
>>
> 

Re: [PATCH 2/3] arm64: dts: qcom: ipq9574: Enable TRNG instead PRNG

[Konrad Dybcio]

On 6.12.2024 8:20 AM, Md Sadre Alam wrote:
> RNG hardware versions greater than 3.0 are Truly
> Random Number Generators (TRNG). In IPQ95xx RNG
> block is TRNG. Update the corresponding compatible
> property to ensure the hardware block is registered
> with the hw_random framework, which feeds the Linux
> entropy pool.

Line wrapping should be around 72 chars, this looks funny

Please change the commit title to 'update TRNG compatible', as
'enable' implies the functionality is not present as of current.

The latter part of the last sentence is misleading, as both
compatibles do the same thing in the driver. Instead, put emphasis
on the wrong compatible being used and the patch making sure the
hardware is described properly, without functional changes.

Same for patch 3

Konrad

Re: [PATCH 1/3] arm64: dts: qcom: ipq5424: Add TRNG node

[Konrad Dybcio]

On 6.12.2024 8:20 AM, Md Sadre Alam wrote:
> add TRNG (Truly Random Number Generator) node for ipq5424
> 
> Signed-off-by: Md Sadre Alam <quic_mdalam@quicinc.com>
> ---

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>

Konrad

Re: [PATCH 2/3] arm64: dts: qcom: ipq9574: Enable TRNG instead PRNG

[Md Sadre Alam]

On 12/13/2024 5:25 AM, Konrad Dybcio wrote:
> On 6.12.2024 8:20 AM, Md Sadre Alam wrote:
>> RNG hardware versions greater than 3.0 are Truly
>> Random Number Generators (TRNG). In IPQ95xx RNG
>> block is TRNG. Update the corresponding compatible
>> property to ensure the hardware block is registered
>> with the hw_random framework, which feeds the Linux
>> entropy pool.
> 
> Line wrapping should be around 72 chars, this looks funny
Ok
> 
> Please change the commit title to 'update TRNG compatible', as
> 'enable' implies the functionality is not present as of current.
Ok
> 
> The latter part of the last sentence is misleading, as both
> compatibles do the same thing in the driver. Instead, put emphasis
> on the wrong compatible being used and the patch making sure the
> hardware is described properly, without functional changes.
Ok, will update in next revision.
> 
> Same for patch 3
Ok
> 
> Konrad

Re: [PATCH 0/3] Enable TRNG support

[Md Sadre Alam]

On 12/6/2024 12:59 PM, Manikanta Mylavarapu wrote:
> 
> 
> On 12/6/2024 12:50 PM, Md Sadre Alam wrote:
>> This patch series enables support for Truly Random Number
>> Generators (TRNG) across various targets, including IPQ95xx,
>> IPQ32xx, and IPQ54xx.
>>
> 
> It should be IPQ53xx, not IPQ32xx.
Ok
> 
> --Manikanta.
> 
>> Md Sadre Alam (3):
>>    arm64: dts: qcom: ipq5424: Add TRNG node
>>    arm64: dts: qcom: ipq9574: Enable TRNG instead PRNG
>>    arm64: dts: qcom: ipq5332: Enable TRNG instead of PRNG
>>
>>   arch/arm64/boot/dts/qcom/ipq5332.dtsi | 2 +-
>>   arch/arm64/boot/dts/qcom/ipq5424.dtsi | 7 +++++++
>>   arch/arm64/boot/dts/qcom/ipq9574.dtsi | 2 +-
>>   3 files changed, 9 insertions(+), 2 deletions(-)
>>
>