[PATCH 0/2] exynos5250-smdk5250: describe SROM controller and ethernet port

[PATCH 0/2] exynos5250-smdk5250: describe SROM controller and ethernet port

[Henrik Grimler]

Based on smdk5250 description in Samsung's vendor kernel [1] and the
u-boot dts [2], the smdk5250 board seems to have a ethernet port
connected to bank 1 of the SROM controller.

Unfortunately I do not have access to the board, so this is not tested
on an actual device, and based solely on the linked sources.

[1] https://github.com/krzk/linux-vendor-backup/blob/samsung/galaxy-note-tab-lte-10.1-2012-gt-n8020-p4note-exynos4412-dump/arch/arm/mach-exynos/mach-smdk5250.c#L982
[2] https://gitlab.com/u-boot/u-boot/-/blob/master/arch/arm/dts/exynos5250-smdk5250.dts

Signed-off-by: Henrik Grimler <henrik@grimler.se>
---
Henrik Grimler (2):
      ARM: dts: samsung: exynos5250: describe sromc bank memory map
      ARM: dts: samsung: smdk5250: add sromc node

 arch/arm/boot/dts/samsung/exynos5250-smdk5250.dts | 37 +++++++++++++++++++++++
 arch/arm/boot/dts/samsung/exynos5250.dtsi         |  9 ++++++
 2 files changed, 46 insertions(+)
---
base-commit: 1557c2eb023d9cdf97b4686fd206048c070d4e70
change-id: 20250722-smdk5250-sromc-ea5b95530eb7

Best regards,
-- 
Henrik Grimler <henrik@grimler.se>

[PATCH 1/2] ARM: dts: samsung: exynos5250: describe sromc bank memory map

[Henrik Grimler]

According to public user manual for Exynos 5250 [1], the SROM
controller has 4 banks, at same addresses as for example Exynos
5410. Describe the bank memory map of the SoC.

[1] https://web.archive.org/web/20130921194458/http://www.samsung.com/global/business/semiconductor/file/product/Exynos_5_Dual_User_Manaul_Public_REV100-0.pdf

Signed-off-by: Henrik Grimler <henrik@grimler.se>
---
 arch/arm/boot/dts/samsung/exynos5250.dtsi | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/arch/arm/boot/dts/samsung/exynos5250.dtsi b/arch/arm/boot/dts/samsung/exynos5250.dtsi
index b9e7c493881804647534b1d7395f6eb62a07fb92..741cc693f5d8f6b33772d7819c965c590571f305 100644
--- a/arch/arm/boot/dts/samsung/exynos5250.dtsi
+++ b/arch/arm/boot/dts/samsung/exynos5250.dtsi
@@ -1214,6 +1214,15 @@ &serial_3 {
 	dma-names = "rx", "tx";
 };
 
+&sromc {
+	#address-cells = <2>;
+	#size-cells = <1>;
+	ranges = <0 0 0x04000000 0x20000
+		  1 0 0x05000000 0x20000
+		  2 0 0x06000000 0x20000
+		  3 0 0x07000000 0x20000>;
+};
+
 &sss {
 	clocks = <&clock CLK_SSS>;
 	clock-names = "secss";

-- 
2.51.0

Re: [PATCH 1/2] ARM: dts: samsung: exynos5250: describe sromc bank memory map

[Krzysztof Kozlowski]

On 04/09/2025 08:10, Henrik Grimler wrote:
> According to public user manual for Exynos 5250 [1], the SROM
> controller has 4 banks, at same addresses as for example Exynos
> 5410. Describe the bank memory map of the SoC.
> 
> [1] https://web.archive.org/web/20130921194458/http://www.samsung.com/global/business/semiconductor/file/product/Exynos_5_Dual_User_Manaul_Public_REV100-0.pdf
> 
> Signed-off-by: Henrik Grimler <henrik@grimler.se>
> ---
>  arch/arm/boot/dts/samsung/exynos5250.dtsi | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/samsung/exynos5250.dtsi b/arch/arm/boot/dts/samsung/exynos5250.dtsi
> index b9e7c493881804647534b1d7395f6eb62a07fb92..741cc693f5d8f6b33772d7819c965c590571f305 100644
> --- a/arch/arm/boot/dts/samsung/exynos5250.dtsi
> +++ b/arch/arm/boot/dts/samsung/exynos5250.dtsi
> @@ -1214,6 +1214,15 @@ &serial_3 {
>  	dma-names = "rx", "tx";
>  };
>  
> +&sromc {
> +	#address-cells = <2>;
> +	#size-cells = <1>;
> +	ranges = <0 0 0x04000000 0x20000


These should be separate tupples, so

<0 0 0x04000000 0x20000>,
<....>,
<....>,



Best regards,
Krzysztof

Re: [PATCH 1/2] ARM: dts: samsung: exynos5250: describe sromc bank memory map

[Henrik Grimler]

Hi Krzysztof,

On Sat, Sep 06, 2025 at 02:24:21PM +0200, Krzysztof Kozlowski wrote:
> On 04/09/2025 08:10, Henrik Grimler wrote:
> > According to public user manual for Exynos 5250 [1], the SROM
> > controller has 4 banks, at same addresses as for example Exynos
> > 5410. Describe the bank memory map of the SoC.
> > 
> > [1] https://web.archive.org/web/20130921194458/http://www.samsung.com/global/business/semiconductor/file/product/Exynos_5_Dual_User_Manaul_Public_REV100-0.pdf
> > 
> > Signed-off-by: Henrik Grimler <henrik@grimler.se>
> > ---
> >  arch/arm/boot/dts/samsung/exynos5250.dtsi | 9 +++++++++
> >  1 file changed, 9 insertions(+)
> > 
> > diff --git a/arch/arm/boot/dts/samsung/exynos5250.dtsi b/arch/arm/boot/dts/samsung/exynos5250.dtsi
> > index b9e7c493881804647534b1d7395f6eb62a07fb92..741cc693f5d8f6b33772d7819c965c590571f305 100644
> > --- a/arch/arm/boot/dts/samsung/exynos5250.dtsi
> > +++ b/arch/arm/boot/dts/samsung/exynos5250.dtsi
> > @@ -1214,6 +1214,15 @@ &serial_3 {
> >  	dma-names = "rx", "tx";
> >  };
> >  
> > +&sromc {
> > +	#address-cells = <2>;
> > +	#size-cells = <1>;
> > +	ranges = <0 0 0x04000000 0x20000
> 
> 
> These should be separate tupples, so
> 
> <0 0 0x04000000 0x20000>,
> <....>,
> <....>,

Thanks, will send a v2 to fix it, and update exynos5410.dtsi, in a day
or two!

> Best regards,
> Krzysztof

Best regards,
Henrik Grimler

[PATCH 2/2] ARM: dts: samsung: smdk5250: add sromc node

[Henrik Grimler]

The smdk5250 board has an ethernet port which is connected to bank 1
of the SROM controller. Describe it.

Signed-off-by: Henrik Grimler <henrik@grimler.se>
---
 arch/arm/boot/dts/samsung/exynos5250-smdk5250.dts | 37 +++++++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/arch/arm/boot/dts/samsung/exynos5250-smdk5250.dts b/arch/arm/boot/dts/samsung/exynos5250-smdk5250.dts
index bb623726ef1e614c50074ec2890072b2b37d212e..6af1f64c984ba6e8344d759d2feb7fbfa320d81f 100644
--- a/arch/arm/boot/dts/samsung/exynos5250-smdk5250.dts
+++ b/arch/arm/boot/dts/samsung/exynos5250-smdk5250.dts
@@ -422,6 +422,43 @@ max77686_irq: max77686-irq-pins {
 		samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
 		samsung,pin-drv = <EXYNOS4_PIN_DRV_LV1>;
 	};
+
+	srom_ctl: srom-ctl-pins {
+		samsung,pins = "gpy0-3", "gpy0-4", "gpy0-5",
+			       "gpy1-0", "gpy1-1", "gpy1-2", "gpy1-3";
+		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-drv = <EXYNOS4_PIN_DRV_LV1>;
+	};
+
+	srom_ebi: srom-ebi-pins {
+		samsung,pins = "gpy3-0", "gpy3-1", "gpy3-2", "gpy3-3",
+			       "gpy3-4", "gpy3-5", "gpy3-6", "gpy3-7",
+			       "gpy5-0", "gpy5-1", "gpy5-2", "gpy5-3",
+			       "gpy5-4", "gpy5-5", "gpy5-6", "gpy5-7",
+			       "gpy6-0", "gpy6-1", "gpy6-2", "gpy6-3",
+			       "gpy6-4", "gpy6-5", "gpy6-6", "gpy6-7";
+		samsung,pin-function = <EXYNOS_PIN_FUNC_2>;
+		samsung,pin-pud = <EXYNOS_PIN_PULL_UP>;
+		samsung,pin-drv = <EXYNOS4_PIN_DRV_LV1>;
+	};
+};
+
+&sromc {
+	pinctrl-names = "default";
+	pinctrl-0 = <&srom_ctl>, <&srom_ebi>;
+
+	ethernet@1,0 {
+		compatible = "smsc,lan9115";
+		reg = <1 0 0x100>;
+		phy-mode = "mii";
+		smsc,irq-push-pull;
+		interrupt-parent = <&gpx0>;
+		interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
+		reg-io-width = <2>;
+
+		samsung,srom-page-mode;
+		samsung,srom-timing = <9 12 1 6 1 1>;
+	};
 };
 
 &usbdrd {

-- 
2.51.0