[PATCH 0/3] ARM: dts: add support for NS, NSP, and NS2 clocks

[PATCH 0/3] ARM: dts: add support for NS, NSP, and NS2 clocks

[Jon Mason]

This patch series adds device tree support for the Broadcom Northstar,
Northstar Plus, and Northstar 2 clocks.

Last sent as an RFC (see https://lkml.org/lkml/2015/10/13/882) due to
the inability to merge because of the driver dependencies.  Those
necessary driver changes were merged into 4.4.  All comments have been
addressed and it is ready to be pulled in.


Jon Mason (3):
  ARM: dts: enable clock support for BCM5301X
  ARM: dts: enable clock support for Broadcom NSP
  ARM64: dts: enable clock support for Broadcom NS2

 arch/arm/boot/dts/bcm-nsp.dtsi        | 99 ++++++++++++++++++++++++++---------
 arch/arm/boot/dts/bcm5301x.dtsi       | 92 ++++++++++++++++++++++++--------
 arch/arm64/boot/dts/broadcom/ns2.dtsi | 80 +++++++++++++++++++++++++++-
 3 files changed, 225 insertions(+), 46 deletions(-)

-- 
1.9.1

[PATCH 1/3] ARM: dts: enable clock support for BCM5301X

[Jon Mason]

Replace current device tree dummy clocks with real clock support for
Broadcom Northstar SoCs.

Signed-off-by: Jon Mason <jonmason@broadcom.com>
---
 arch/arm/boot/dts/bcm5301x.dtsi | 92 +++++++++++++++++++++++++++++++----------
 1 file changed, 71 insertions(+), 21 deletions(-)

diff --git a/arch/arm/boot/dts/bcm5301x.dtsi b/arch/arm/boot/dts/bcm5301x.dtsi
index 6f50f67..65a1309 100644
--- a/arch/arm/boot/dts/bcm5301x.dtsi
+++ b/arch/arm/boot/dts/bcm5301x.dtsi
@@ -8,6 +8,7 @@
  * Licensed under the GNU/GPL. See COPYING for details.
  */
 
+#include <dt-bindings/clock/bcm-nsp.h>
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/interrupt-controller/irq.h>
@@ -27,7 +28,7 @@
 			compatible = "ns16550";
 			reg = <0x0300 0x100>;
 			interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
-			clock-frequency = <100000000>;
+			clocks = <&iprocslow>;
 			status = "disabled";
 		};
 
@@ -35,48 +36,55 @@
 			compatible = "ns16550";
 			reg = <0x0400 0x100>;
 			interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
-			clock-frequency = <100000000>;
+			clocks = <&iprocslow>;
 			status = "disabled";
 		};
 	};
 
 	mpcore {
 		compatible = "simple-bus";
-		ranges = <0x00000000 0x19020000 0x00003000>;
+		ranges = <0x00000000 0x19000000 0x00023000>;
 		#address-cells = <1>;
 		#size-cells = <1>;
 
-		scu at 0000 {
+		a9pll: arm_clk at 00000 {
+			#clock-cells = <0>;
+			compatible = "brcm,nsp-armpll";
+			clocks = <&osc>;
+			reg = <0x00000 0x1000>;
+		};
+
+		scu at 20000 {
 			compatible = "arm,cortex-a9-scu";
-			reg = <0x0000 0x100>;
+			reg = <0x20000 0x100>;
 		};
 
-		timer at 0200 {
+		timer at 20200 {
 			compatible = "arm,cortex-a9-global-timer";
-			reg = <0x0200 0x100>;
+			reg = <0x20200 0x100>;
 			interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&clk_periph>;
+			clocks = <&periph_clk>;
 		};
 
-		local-timer at 0600 {
+		local-timer at 20600 {
 			compatible = "arm,cortex-a9-twd-timer";
-			reg = <0x0600 0x100>;
+			reg = <0x20600 0x100>;
 			interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_HIGH>;
-			clocks = <&clk_periph>;
+			clocks = <&periph_clk>;
 		};
 
-		gic: interrupt-controller at 1000 {
+		gic: interrupt-controller at 21000 {
 			compatible = "arm,cortex-a9-gic";
 			#interrupt-cells = <3>;
 			#address-cells = <0>;
 			interrupt-controller;
-			reg = <0x1000 0x1000>,
-			      <0x0100 0x100>;
+			reg = <0x21000 0x1000>,
+			      <0x20100 0x100>;
 		};
 
-		L2: cache-controller at 2000 {
+		L2: cache-controller at 22000 {
 			compatible = "arm,pl310-cache";
-			reg = <0x2000 0x1000>;
+			reg = <0x22000 0x1000>;
 			cache-unified;
 			arm,shared-override;
 			prefetch-data = <1>;
@@ -94,14 +102,37 @@
 
 	clocks {
 		#address-cells = <1>;
-		#size-cells = <0>;
+		#size-cells = <1>;
+		ranges;
 
-		/* As long as we do not have a real clock driver us this
-		 * fixed clock */
-		clk_periph: periph {
+		osc: oscillator {
+			#clock-cells = <0>;
 			compatible = "fixed-clock";
+			clock-frequency = <25000000>;
+		};
+
+		iprocmed: iprocmed {
+			#clock-cells = <0>;
+			compatible = "fixed-factor-clock";
+			clocks = <&genpll BCM_NSP_GENPLL_IPROCFAST_CLK>;
+			clock-div = <2>;
+			clock-mult = <1>;
+		};
+
+		iprocslow: iprocslow {
+			#clock-cells = <0>;
+			compatible = "fixed-factor-clock";
+			clocks = <&genpll BCM_NSP_GENPLL_IPROCFAST_CLK>;
+			clock-div = <4>;
+			clock-mult = <1>;
+		};
+
+		periph_clk: periph_clk {
 			#clock-cells = <0>;
-			clock-frequency = <400000000>;
+			compatible = "fixed-factor-clock";
+			clocks = <&a9pll>;
+			clock-div = <2>;
+			clock-mult = <1>;
 		};
 	};
 
@@ -178,6 +209,25 @@
 		};
 	};
 
+	lcpll0: lcpll0 at 1800c100 {
+		#clock-cells = <1>;
+		compatible = "brcm,nsp-lcpll0";
+		reg = <0x1800c100 0x14>;
+		clocks = <&osc>;
+		clock-output-names = "lcpll0", "pcie_phy", "sdio",
+				     "ddr_phy";
+	};
+
+	genpll: genpll at 1800c140 {
+		#clock-cells = <1>;
+		compatible = "brcm,nsp-genpll";
+		reg = <0x1800c140 0x24>;
+		clocks = <&osc>;
+		clock-output-names = "genpll", "phy", "ethernetclk",
+				     "usbclk", "iprocfast", "sata1",
+				     "sata2";
+	};
+
 	nand: nand at 18028000 {
 		compatible = "brcm,nand-iproc", "brcm,brcmnand-v6.1", "brcm,brcmnand";
 		reg = <0x18028000 0x600>, <0x1811a408 0x600>, <0x18028f00 0x20>;
-- 
1.9.1

[PATCH 2/3] ARM: dts: enable clock support for Broadcom NSP

[Jon Mason]

Replace current device tree dummy clocks with real clock support for
Broadcom Northstar Plus SoC

Signed-off-by: Jon Mason <jonmason@broadcom.com>
---
 arch/arm/boot/dts/bcm-nsp.dtsi | 99 ++++++++++++++++++++++++++++++++----------
 1 file changed, 75 insertions(+), 24 deletions(-)

diff --git a/arch/arm/boot/dts/bcm-nsp.dtsi b/arch/arm/boot/dts/bcm-nsp.dtsi
index 4bcdd28..f85a4f1 100644
--- a/arch/arm/boot/dts/bcm-nsp.dtsi
+++ b/arch/arm/boot/dts/bcm-nsp.dtsi
@@ -32,6 +32,7 @@
 
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/clock/bcm-nsp.h>
 
 #include "skeleton.dtsi"
 
@@ -42,7 +43,7 @@
 
 	mpcore {
 		compatible = "simple-bus";
-		ranges = <0x00000000 0x19020000 0x00003000>;
+		ranges = <0x00000000 0x19000000 0x00023000>;
 		#address-cells = <1>;
 		#size-cells = <1>;
 
@@ -58,32 +59,23 @@
 			};
 		};
 
-		L2: l2-cache {
-			compatible = "arm,pl310-cache";
-			reg = <0x2000 0x1000>;
-			cache-unified;
-			cache-level = <2>;
-		};
-
-		gic: interrupt-controller at 19021000 {
-			compatible = "arm,cortex-a9-gic";
-			#interrupt-cells = <3>;
-			#address-cells = <0>;
-			interrupt-controller;
-			reg = <0x1000 0x1000>,
-			      <0x0100 0x100>;
+		a9pll: arm_clk at 19000000 {
+			#clock-cells = <0>;
+			compatible = "brcm,nsp-armpll";
+			clocks = <&osc>;
+			reg = <0x00000 0x1000>;
 		};
 
 		timer at 19020200 {
 			compatible = "arm,cortex-a9-global-timer";
-			reg = <0x0200 0x100>;
+			reg = <0x20200 0x100>;
 			interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&periph_clk>;
 		};
 
 		twd-timer at 19020600 {
 			compatible = "arm,cortex-a9-twd-timer";
-			reg = <0x0600 0x20>;
+			reg = <0x20600 0x20>;
 			interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(2) |
 						  IRQ_TYPE_LEVEL_HIGH)>;
 			clocks = <&periph_clk>;
@@ -91,11 +83,27 @@
 
 		twd-watchdog at 19020620 {
 			compatible = "arm,cortex-a9-twd-wdt";
-			reg = <0x0620 0x20>;
+			reg = <0x20620 0x20>;
 			interrupts = <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(2) |
 						  IRQ_TYPE_LEVEL_HIGH)>;
 			clocks = <&periph_clk>;
 		};
+
+		gic: interrupt-controller at 19021000 {
+			compatible = "arm,cortex-a9-gic";
+			#interrupt-cells = <3>;
+			#address-cells = <0>;
+			interrupt-controller;
+			reg = <0x21000 0x1000>,
+			      <0x20100 0x100>;
+		};
+
+		L2: l2-cache {
+			compatible = "arm,pl310-cache";
+			reg = <0x22000 0x1000>;
+			cache-unified;
+			cache-level = <2>;
+		};
 	};
 
 	clocks {
@@ -103,10 +111,34 @@
 		#size-cells = <1>;
 		ranges;
 
-		periph_clk: periph_clk {
+		osc: oscillator {
+			#clock-cells = <0>;
 			compatible = "fixed-clock";
+			clock-frequency = <25000000>;
+		};
+
+		iprocmed: iprocmed {
+			#clock-cells = <0>;
+			compatible = "fixed-factor-clock";
+			clocks = <&genpll BCM_NSP_GENPLL_IPROCFAST_CLK>;
+			clock-div = <2>;
+			clock-mult = <1>;
+		};
+
+		iprocslow: iprocslow {
+			#clock-cells = <0>;
+			compatible = "fixed-factor-clock";
+			clocks = <&genpll BCM_NSP_GENPLL_IPROCFAST_CLK>;
+			clock-div = <4>;
+			clock-mult = <1>;
+		};
+
+		periph_clk: periph_clk {
 			#clock-cells = <0>;
-			clock-frequency = <500000000>;
+			compatible = "fixed-factor-clock";
+			clocks = <&a9pll>;
+			clock-div = <2>;
+			clock-mult = <1>;
 		};
 	};
 
@@ -118,17 +150,17 @@
 
 		uart0: serial at 18000300 {
 			compatible = "ns16550a";
-			reg = <0x0300 0x100>;
+			reg = <0x000300 0x100>;
 			interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
-			clock-frequency = <62499840>;
+			clocks = <&osc>;
 			status = "disabled";
 		};
 
 		uart1: serial at 18000400 {
 			compatible = "ns16550a";
-			reg = <0x0400 0x100>;
+			reg = <0x000400 0x100>;
 			interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
-			clock-frequency = <62499840>;
+			clocks = <&osc>;
 			status = "disabled";
 		};
 
@@ -217,5 +249,24 @@
 
 			brcm,nand-has-wp;
 		};
+
+		lcpll0: lcpll0 at 1803f100 {
+			#clock-cells = <1>;
+			compatible = "brcm,nsp-lcpll0";
+			reg = <0x03f100 0x14>;
+			clocks = <&osc>;
+			clock-output-names = "lcpll0", "pcie_phy", "sdio",
+					     "ddr_phy";
+		};
+
+		genpll: genpll at 1803f140 {
+			#clock-cells = <1>;
+			compatible = "brcm,nsp-genpll";
+			reg = <0x03f140 0x24>;
+			clocks = <&osc>;
+			clock-output-names = "genpll", "phy", "ethernetclk",
+					     "usbclk", "iprocfast", "sata1",
+					     "sata2";
+		};
 	};
 };
-- 
1.9.1

[PATCH 2/3] ARM: dts: enable clock support for Broadcom NSP

[Ray Jui]

Would this patch merge properly with the other NSP DT clean up patch + 
I2C DT patch that you worked out internally but have not sent out?

I thought it's going to make the maintainers' life easier if you can 
group DT changes per platform and send them out in the same series.

I also have some inline comments below.

On 11/18/2015 3:13 PM, Jon Mason wrote:
> Replace current device tree dummy clocks with real clock support for
> Broadcom Northstar Plus SoC
>
> Signed-off-by: Jon Mason <jonmason@broadcom.com>
> ---
>   arch/arm/boot/dts/bcm-nsp.dtsi | 99 ++++++++++++++++++++++++++++++++----------
>   1 file changed, 75 insertions(+), 24 deletions(-)
>
> diff --git a/arch/arm/boot/dts/bcm-nsp.dtsi b/arch/arm/boot/dts/bcm-nsp.dtsi
> index 4bcdd28..f85a4f1 100644
> --- a/arch/arm/boot/dts/bcm-nsp.dtsi
> +++ b/arch/arm/boot/dts/bcm-nsp.dtsi
> @@ -32,6 +32,7 @@
>
>   #include <dt-bindings/interrupt-controller/arm-gic.h>
>   #include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/clock/bcm-nsp.h>
>
>   #include "skeleton.dtsi"
>
> @@ -42,7 +43,7 @@
>
>   	mpcore {
>   		compatible = "simple-bus";
> -		ranges = <0x00000000 0x19020000 0x00003000>;
> +		ranges = <0x00000000 0x19000000 0x00023000>;

Why does this have anything to do with clocks? Shouldn't it be a 
separate patch?

>   		#address-cells = <1>;
>   		#size-cells = <1>;
>
> @@ -58,32 +59,23 @@
>   			};
>   		};
>
> -		L2: l2-cache {
> -			compatible = "arm,pl310-cache";
> -			reg = <0x2000 0x1000>;
> -			cache-unified;
> -			cache-level = <2>;
> -		};
> -
> -		gic: interrupt-controller at 19021000 {
> -			compatible = "arm,cortex-a9-gic";
> -			#interrupt-cells = <3>;
> -			#address-cells = <0>;
> -			interrupt-controller;
> -			reg = <0x1000 0x1000>,
> -			      <0x0100 0x100>;
> +		a9pll: arm_clk at 19000000 {
> +			#clock-cells = <0>;
> +			compatible = "brcm,nsp-armpll";
> +			clocks = <&osc>;
> +			reg = <0x00000 0x1000>;
>   		};
>
>   		timer at 19020200 {
>   			compatible = "arm,cortex-a9-global-timer";
> -			reg = <0x0200 0x100>;
> +			reg = <0x20200 0x100>;
>   			interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
>   			clocks = <&periph_clk>;
>   		};
>
>   		twd-timer at 19020600 {
>   			compatible = "arm,cortex-a9-twd-timer";
> -			reg = <0x0600 0x20>;
> +			reg = <0x20600 0x20>;
>   			interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(2) |
>   						  IRQ_TYPE_LEVEL_HIGH)>;
>   			clocks = <&periph_clk>;
> @@ -91,11 +83,27 @@
>
>   		twd-watchdog at 19020620 {
>   			compatible = "arm,cortex-a9-twd-wdt";
> -			reg = <0x0620 0x20>;
> +			reg = <0x20620 0x20>;
>   			interrupts = <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(2) |
>   						  IRQ_TYPE_LEVEL_HIGH)>;
>   			clocks = <&periph_clk>;
>   		};
> +
> +		gic: interrupt-controller at 19021000 {
> +			compatible = "arm,cortex-a9-gic";
> +			#interrupt-cells = <3>;
> +			#address-cells = <0>;
> +			interrupt-controller;
> +			reg = <0x21000 0x1000>,
> +			      <0x20100 0x100>;
> +		};
> +
> +		L2: l2-cache {
> +			compatible = "arm,pl310-cache";
> +			reg = <0x22000 0x1000>;
> +			cache-unified;
> +			cache-level = <2>;
> +		};

 From here and above, all labels are wrong. You are moving them into a 
bus that has translated bus addresses, but you still use absolute 
addresses for all labels.

And again, 1) Why is this change imbedded in a patch meant for adding DT 
clock support according to the commit message; 2) how does the 
dependency work with the other patches that you are about to send out?


>   	};
>
>   	clocks {
> @@ -103,10 +111,34 @@
>   		#size-cells = <1>;
>   		ranges;
>
> -		periph_clk: periph_clk {
> +		osc: oscillator {
> +			#clock-cells = <0>;
>   			compatible = "fixed-clock";
> +			clock-frequency = <25000000>;
> +		};
> +
> +		iprocmed: iprocmed {
> +			#clock-cells = <0>;
> +			compatible = "fixed-factor-clock";
> +			clocks = <&genpll BCM_NSP_GENPLL_IPROCFAST_CLK>;
> +			clock-div = <2>;
> +			clock-mult = <1>;
> +		};
> +
> +		iprocslow: iprocslow {
> +			#clock-cells = <0>;
> +			compatible = "fixed-factor-clock";
> +			clocks = <&genpll BCM_NSP_GENPLL_IPROCFAST_CLK>;
> +			clock-div = <4>;
> +			clock-mult = <1>;
> +		};
> +
> +		periph_clk: periph_clk {
>   			#clock-cells = <0>;
> -			clock-frequency = <500000000>;
> +			compatible = "fixed-factor-clock";
> +			clocks = <&a9pll>;
> +			clock-div = <2>;
> +			clock-mult = <1>;
>   		};
>   	};
>
> @@ -118,17 +150,17 @@
>
>   		uart0: serial at 18000300 {
>   			compatible = "ns16550a";
> -			reg = <0x0300 0x100>;
> +			reg = <0x000300 0x100>;
>   			interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
> -			clock-frequency = <62499840>;
> +			clocks = <&osc>;
>   			status = "disabled";
>   		};
>
>   		uart1: serial at 18000400 {
>   			compatible = "ns16550a";
> -			reg = <0x0400 0x100>;
> +			reg = <0x000400 0x100>;
>   			interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
> -			clock-frequency = <62499840>;
> +			clocks = <&osc>;
>   			status = "disabled";
>   		};
>
> @@ -217,5 +249,24 @@
>
>   			brcm,nand-has-wp;
>   		};
> +
> +		lcpll0: lcpll0 at 1803f100 {

wrong label

> +			#clock-cells = <1>;
> +			compatible = "brcm,nsp-lcpll0";
> +			reg = <0x03f100 0x14>;
> +			clocks = <&osc>;
> +			clock-output-names = "lcpll0", "pcie_phy", "sdio",
> +					     "ddr_phy";
> +		};
> +
> +		genpll: genpll at 1803f140 {

wrong label

> +			#clock-cells = <1>;
> +			compatible = "brcm,nsp-genpll";
> +			reg = <0x03f140 0x24>;
> +			clocks = <&osc>;
> +			clock-output-names = "genpll", "phy", "ethernetclk",
> +					     "usbclk", "iprocfast", "sata1",
> +					     "sata2";
> +		};
>   	};
>   };
>

[PATCH 2/3] ARM: dts: enable clock support for Broadcom NSP

[Jon Mason]

On Wed, Nov 18, 2015 at 03:57:36PM -0800, Ray Jui wrote:
> Would this patch merge properly with the other NSP DT clean up patch
> + I2C DT patch that you worked out internally but have not sent out?
> 
> I thought it's going to make the maintainers' life easier if you can
> group DT changes per platform and send them out in the same series.
> 
> I also have some inline comments below.
> 
> On 11/18/2015 3:13 PM, Jon Mason wrote:
> >Replace current device tree dummy clocks with real clock support for
> >Broadcom Northstar Plus SoC
> >
> >Signed-off-by: Jon Mason <jonmason@broadcom.com>
> >---
> >  arch/arm/boot/dts/bcm-nsp.dtsi | 99 ++++++++++++++++++++++++++++++++----------
> >  1 file changed, 75 insertions(+), 24 deletions(-)
> >
> >diff --git a/arch/arm/boot/dts/bcm-nsp.dtsi b/arch/arm/boot/dts/bcm-nsp.dtsi
> >index 4bcdd28..f85a4f1 100644
> >--- a/arch/arm/boot/dts/bcm-nsp.dtsi
> >+++ b/arch/arm/boot/dts/bcm-nsp.dtsi
> >@@ -32,6 +32,7 @@
> >
> >  #include <dt-bindings/interrupt-controller/arm-gic.h>
> >  #include <dt-bindings/interrupt-controller/irq.h>
> >+#include <dt-bindings/clock/bcm-nsp.h>
> >
> >  #include "skeleton.dtsi"
> >
> >@@ -42,7 +43,7 @@
> >
> >  	mpcore {
> >  		compatible = "simple-bus";
> >-		ranges = <0x00000000 0x19020000 0x00003000>;
> >+		ranges = <0x00000000 0x19000000 0x00023000>;
> 
> Why does this have anything to do with clocks? Shouldn't it be a
> separate patch?

No, this is correct (though the patch is a little odd to look at).
The a9pll starts at 0x19000000 instead of 0x19020000.  So, everything
needs to be adjusted.

> 
> >  		#address-cells = <1>;
> >  		#size-cells = <1>;
> >
> >@@ -58,32 +59,23 @@
> >  			};
> >  		};
> >
> >-		L2: l2-cache {
> >-			compatible = "arm,pl310-cache";
> >-			reg = <0x2000 0x1000>;
> >-			cache-unified;
> >-			cache-level = <2>;
> >-		};
> >-
> >-		gic: interrupt-controller at 19021000 {
> >-			compatible = "arm,cortex-a9-gic";
> >-			#interrupt-cells = <3>;
> >-			#address-cells = <0>;
> >-			interrupt-controller;
> >-			reg = <0x1000 0x1000>,
> >-			      <0x0100 0x100>;
> >+		a9pll: arm_clk at 19000000 {
> >+			#clock-cells = <0>;
> >+			compatible = "brcm,nsp-armpll";
> >+			clocks = <&osc>;
> >+			reg = <0x00000 0x1000>;
> >  		};
> >
> >  		timer at 19020200 {
> >  			compatible = "arm,cortex-a9-global-timer";
> >-			reg = <0x0200 0x100>;
> >+			reg = <0x20200 0x100>;
> >  			interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
> >  			clocks = <&periph_clk>;
> >  		};
> >
> >  		twd-timer at 19020600 {
> >  			compatible = "arm,cortex-a9-twd-timer";
> >-			reg = <0x0600 0x20>;
> >+			reg = <0x20600 0x20>;
> >  			interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(2) |
> >  						  IRQ_TYPE_LEVEL_HIGH)>;
> >  			clocks = <&periph_clk>;
> >@@ -91,11 +83,27 @@
> >
> >  		twd-watchdog at 19020620 {
> >  			compatible = "arm,cortex-a9-twd-wdt";
> >-			reg = <0x0620 0x20>;
> >+			reg = <0x20620 0x20>;
> >  			interrupts = <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(2) |
> >  						  IRQ_TYPE_LEVEL_HIGH)>;
> >  			clocks = <&periph_clk>;
> >  		};
> >+
> >+		gic: interrupt-controller at 19021000 {
> >+			compatible = "arm,cortex-a9-gic";
> >+			#interrupt-cells = <3>;
> >+			#address-cells = <0>;
> >+			interrupt-controller;
> >+			reg = <0x21000 0x1000>,
> >+			      <0x20100 0x100>;
> >+		};
> >+
> >+		L2: l2-cache {
> >+			compatible = "arm,pl310-cache";
> >+			reg = <0x22000 0x1000>;
> >+			cache-unified;
> >+			cache-level = <2>;
> >+		};
> 
> From here and above, all labels are wrong. You are moving them into
> a bus that has translated bus addresses, but you still use absolute
> addresses for all labels.
> 
> And again, 1) Why is this change imbedded in a patch meant for
> adding DT clock support according to the commit message; 2) how does
> the dependency work with the other patches that you are about to
> send out?

This was already discussed in the original series.  See
http://www.spinics.net/lists/arm-kernel/msg451580.html


> 
> 
> >  	};
> >
> >  	clocks {
> >@@ -103,10 +111,34 @@
> >  		#size-cells = <1>;
> >  		ranges;
> >
> >-		periph_clk: periph_clk {
> >+		osc: oscillator {
> >+			#clock-cells = <0>;
> >  			compatible = "fixed-clock";
> >+			clock-frequency = <25000000>;
> >+		};
> >+
> >+		iprocmed: iprocmed {
> >+			#clock-cells = <0>;
> >+			compatible = "fixed-factor-clock";
> >+			clocks = <&genpll BCM_NSP_GENPLL_IPROCFAST_CLK>;
> >+			clock-div = <2>;
> >+			clock-mult = <1>;
> >+		};
> >+
> >+		iprocslow: iprocslow {
> >+			#clock-cells = <0>;
> >+			compatible = "fixed-factor-clock";
> >+			clocks = <&genpll BCM_NSP_GENPLL_IPROCFAST_CLK>;
> >+			clock-div = <4>;
> >+			clock-mult = <1>;
> >+		};
> >+
> >+		periph_clk: periph_clk {
> >  			#clock-cells = <0>;
> >-			clock-frequency = <500000000>;
> >+			compatible = "fixed-factor-clock";
> >+			clocks = <&a9pll>;
> >+			clock-div = <2>;
> >+			clock-mult = <1>;
> >  		};
> >  	};
> >
> >@@ -118,17 +150,17 @@
> >
> >  		uart0: serial at 18000300 {
> >  			compatible = "ns16550a";
> >-			reg = <0x0300 0x100>;
> >+			reg = <0x000300 0x100>;
> >  			interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
> >-			clock-frequency = <62499840>;
> >+			clocks = <&osc>;
> >  			status = "disabled";
> >  		};
> >
> >  		uart1: serial at 18000400 {
> >  			compatible = "ns16550a";
> >-			reg = <0x0400 0x100>;
> >+			reg = <0x000400 0x100>;
> >  			interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
> >-			clock-frequency = <62499840>;
> >+			clocks = <&osc>;
> >  			status = "disabled";
> >  		};
> >
> >@@ -217,5 +249,24 @@
> >
> >  			brcm,nand-has-wp;
> >  		};
> >+
> >+		lcpll0: lcpll0 at 1803f100 {
> 
> wrong label
> 
> >+			#clock-cells = <1>;
> >+			compatible = "brcm,nsp-lcpll0";
> >+			reg = <0x03f100 0x14>;
> >+			clocks = <&osc>;
> >+			clock-output-names = "lcpll0", "pcie_phy", "sdio",
> >+					     "ddr_phy";
> >+		};
> >+
> >+		genpll: genpll at 1803f140 {
> 
> wrong label
> 
> >+			#clock-cells = <1>;
> >+			compatible = "brcm,nsp-genpll";
> >+			reg = <0x03f140 0x24>;
> >+			clocks = <&osc>;
> >+			clock-output-names = "genpll", "phy", "ethernetclk",
> >+					     "usbclk", "iprocfast", "sata1",
> >+					     "sata2";
> >+		};
> >  	};
> >  };
> >

[PATCH 2/3] ARM: dts: enable clock support for Broadcom NSP

[Ray Jui]

On 11/19/2015 7:48 AM, Jon Mason wrote:
> On Wed, Nov 18, 2015 at 03:57:36PM -0800, Ray Jui wrote:
>> Would this patch merge properly with the other NSP DT clean up patch
>> + I2C DT patch that you worked out internally but have not sent out?
>>
>> I thought it's going to make the maintainers' life easier if you can
>> group DT changes per platform and send them out in the same series.
>>
>> I also have some inline comments below.
>>
>> On 11/18/2015 3:13 PM, Jon Mason wrote:
>>> Replace current device tree dummy clocks with real clock support for
>>> Broadcom Northstar Plus SoC
>>>
>>> Signed-off-by: Jon Mason <jonmason@broadcom.com>
>>> ---
>>>   arch/arm/boot/dts/bcm-nsp.dtsi | 99 ++++++++++++++++++++++++++++++++----------
>>>   1 file changed, 75 insertions(+), 24 deletions(-)
>>>
>>> diff --git a/arch/arm/boot/dts/bcm-nsp.dtsi b/arch/arm/boot/dts/bcm-nsp.dtsi
>>> index 4bcdd28..f85a4f1 100644
>>> --- a/arch/arm/boot/dts/bcm-nsp.dtsi
>>> +++ b/arch/arm/boot/dts/bcm-nsp.dtsi
>>> @@ -32,6 +32,7 @@
>>>
>>>   #include <dt-bindings/interrupt-controller/arm-gic.h>
>>>   #include <dt-bindings/interrupt-controller/irq.h>
>>> +#include <dt-bindings/clock/bcm-nsp.h>
>>>
>>>   #include "skeleton.dtsi"
>>>
>>> @@ -42,7 +43,7 @@
>>>
>>>   	mpcore {
>>>   		compatible = "simple-bus";
>>> -		ranges = <0x00000000 0x19020000 0x00003000>;
>>> +		ranges = <0x00000000 0x19000000 0x00023000>;
>>
>> Why does this have anything to do with clocks? Shouldn't it be a
>> separate patch?
>
> No, this is correct (though the patch is a little odd to look at).
> The a9pll starts at 0x19000000 instead of 0x19020000.  So, everything
> needs to be adjusted.
>

Okay.

>>
>>>   		#address-cells = <1>;
>>>   		#size-cells = <1>;
>>>
>>> @@ -58,32 +59,23 @@
>>>   			};
>>>   		};
>>>
>>> -		L2: l2-cache {
>>> -			compatible = "arm,pl310-cache";
>>> -			reg = <0x2000 0x1000>;
>>> -			cache-unified;
>>> -			cache-level = <2>;
>>> -		};
>>> -
>>> -		gic: interrupt-controller at 19021000 {
>>> -			compatible = "arm,cortex-a9-gic";
>>> -			#interrupt-cells = <3>;
>>> -			#address-cells = <0>;
>>> -			interrupt-controller;
>>> -			reg = <0x1000 0x1000>,
>>> -			      <0x0100 0x100>;
>>> +		a9pll: arm_clk at 19000000 {
>>> +			#clock-cells = <0>;
>>> +			compatible = "brcm,nsp-armpll";
>>> +			clocks = <&osc>;
>>> +			reg = <0x00000 0x1000>;
>>>   		};
>>>
>>>   		timer at 19020200 {
>>>   			compatible = "arm,cortex-a9-global-timer";
>>> -			reg = <0x0200 0x100>;
>>> +			reg = <0x20200 0x100>;
>>>   			interrupts = <GIC_PPI 11 IRQ_TYPE_LEVEL_HIGH>;
>>>   			clocks = <&periph_clk>;
>>>   		};
>>>
>>>   		twd-timer at 19020600 {
>>>   			compatible = "arm,cortex-a9-twd-timer";
>>> -			reg = <0x0600 0x20>;
>>> +			reg = <0x20600 0x20>;
>>>   			interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(2) |
>>>   						  IRQ_TYPE_LEVEL_HIGH)>;
>>>   			clocks = <&periph_clk>;
>>> @@ -91,11 +83,27 @@
>>>
>>>   		twd-watchdog at 19020620 {
>>>   			compatible = "arm,cortex-a9-twd-wdt";
>>> -			reg = <0x0620 0x20>;
>>> +			reg = <0x20620 0x20>;
>>>   			interrupts = <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(2) |
>>>   						  IRQ_TYPE_LEVEL_HIGH)>;
>>>   			clocks = <&periph_clk>;
>>>   		};
>>> +
>>> +		gic: interrupt-controller at 19021000 {
>>> +			compatible = "arm,cortex-a9-gic";
>>> +			#interrupt-cells = <3>;
>>> +			#address-cells = <0>;
>>> +			interrupt-controller;
>>> +			reg = <0x21000 0x1000>,
>>> +			      <0x20100 0x100>;
>>> +		};
>>> +
>>> +		L2: l2-cache {
>>> +			compatible = "arm,pl310-cache";
>>> +			reg = <0x22000 0x1000>;
>>> +			cache-unified;
>>> +			cache-level = <2>;
>>> +		};
>>
>>  From here and above, all labels are wrong. You are moving them into
>> a bus that has translated bus addresses, but you still use absolute
>> addresses for all labels.
>>

Please fix all the labels.

>> And again, 1) Why is this change imbedded in a patch meant for
>> adding DT clock support according to the commit message; 2) how does
>> the dependency work with the other patches that you are about to
>> send out?
>
> This was already discussed in the original series.  See
> http://www.spinics.net/lists/arm-kernel/msg451580.html

The discussion explains my first question. But what about my second 
question? How does the dependency work with other NSP DT patches that 
you have on hand? Will there be conflicts? If so, do you expect the 
maintainers need to manually fix all the conflicts?

>>
>>
>>>   	};
>>>
>>>   	clocks {
>>> @@ -103,10 +111,34 @@
>>>   		#size-cells = <1>;
>>>   		ranges;
>>>
>>> -		periph_clk: periph_clk {
>>> +		osc: oscillator {
>>> +			#clock-cells = <0>;
>>>   			compatible = "fixed-clock";
>>> +			clock-frequency = <25000000>;
>>> +		};
>>> +
>>> +		iprocmed: iprocmed {
>>> +			#clock-cells = <0>;
>>> +			compatible = "fixed-factor-clock";
>>> +			clocks = <&genpll BCM_NSP_GENPLL_IPROCFAST_CLK>;
>>> +			clock-div = <2>;
>>> +			clock-mult = <1>;
>>> +		};
>>> +
>>> +		iprocslow: iprocslow {
>>> +			#clock-cells = <0>;
>>> +			compatible = "fixed-factor-clock";
>>> +			clocks = <&genpll BCM_NSP_GENPLL_IPROCFAST_CLK>;
>>> +			clock-div = <4>;
>>> +			clock-mult = <1>;
>>> +		};
>>> +
>>> +		periph_clk: periph_clk {
>>>   			#clock-cells = <0>;
>>> -			clock-frequency = <500000000>;
>>> +			compatible = "fixed-factor-clock";
>>> +			clocks = <&a9pll>;
>>> +			clock-div = <2>;
>>> +			clock-mult = <1>;
>>>   		};
>>>   	};
>>>
>>> @@ -118,17 +150,17 @@
>>>
>>>   		uart0: serial at 18000300 {
>>>   			compatible = "ns16550a";
>>> -			reg = <0x0300 0x100>;
>>> +			reg = <0x000300 0x100>;
>>>   			interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
>>> -			clock-frequency = <62499840>;
>>> +			clocks = <&osc>;
>>>   			status = "disabled";
>>>   		};
>>>
>>>   		uart1: serial at 18000400 {
>>>   			compatible = "ns16550a";
>>> -			reg = <0x0400 0x100>;
>>> +			reg = <0x000400 0x100>;
>>>   			interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
>>> -			clock-frequency = <62499840>;
>>> +			clocks = <&osc>;
>>>   			status = "disabled";
>>>   		};
>>>
>>> @@ -217,5 +249,24 @@
>>>
>>>   			brcm,nand-has-wp;
>>>   		};
>>> +
>>> +		lcpll0: lcpll0 at 1803f100 {
>>
>> wrong label
>>

Please fix

>>> +			#clock-cells = <1>;
>>> +			compatible = "brcm,nsp-lcpll0";
>>> +			reg = <0x03f100 0x14>;
>>> +			clocks = <&osc>;
>>> +			clock-output-names = "lcpll0", "pcie_phy", "sdio",
>>> +					     "ddr_phy";
>>> +		};
>>> +
>>> +		genpll: genpll at 1803f140 {
>>
>> wrong label
>>

Please fix

>>> +			#clock-cells = <1>;
>>> +			compatible = "brcm,nsp-genpll";
>>> +			reg = <0x03f140 0x24>;
>>> +			clocks = <&osc>;
>>> +			clock-output-names = "genpll", "phy", "ethernetclk",
>>> +					     "usbclk", "iprocfast", "sata1",
>>> +					     "sata2";
>>> +		};
>>>   	};
>>>   };
>>>

[PATCH 3/3] ARM64: dts: enable clock support for Broadcom NS2

[Jon Mason]

Add device tree entries for clock support for Broadcom Northstar 2 SoC

Signed-off-by: Jon Mason <jonmason@broadcom.com>
---
 arch/arm64/boot/dts/broadcom/ns2.dtsi | 80 ++++++++++++++++++++++++++++++++++-
 1 file changed, 79 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/broadcom/ns2.dtsi b/arch/arm64/boot/dts/broadcom/ns2.dtsi
index 9610822..a510d3a 100644
--- a/arch/arm64/boot/dts/broadcom/ns2.dtsi
+++ b/arch/arm64/boot/dts/broadcom/ns2.dtsi
@@ -31,6 +31,7 @@
  */
 
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/clock/bcm-ns2.h>
 
 /memreserve/ 0x84b00000 0x00000008;
 
@@ -109,6 +110,33 @@
 				     <&A57_3>;
 	};
 
+	clocks {
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		osc: oscillator {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <25000000>;
+		};
+
+		iprocmed: iprocmed {
+			#clock-cells = <0>;
+			compatible = "fixed-factor-clock";
+			clocks = <&genpll_scr BCM_NS2_GENPLL_SCR_SCR_CLK>;
+			clock-div = <2>;
+			clock-mult = <1>;
+		};
+
+		iprocslow: iprocslow {
+			#clock-cells = <0>;
+			compatible = "fixed-factor-clock";
+			clocks = <&genpll_scr BCM_NS2_GENPLL_SCR_SCR_CLK>;
+			clock-div = <4>;
+			clock-mult = <1>;
+		};
+	};
+
 	soc: soc {
 		compatible = "simple-bus";
 		#address-cells = <1>;
@@ -156,6 +184,56 @@
 			mmu-masters;
 		};
 
+		lcpll_ddr: lcpll_ddr at 6501d058 {
+			#clock-cells = <1>;
+			compatible = "brcm,ns2-lcpll-ddr";
+			reg = <0x6501d058 0x20>,
+			      <0x6501c020 0x4>,
+			      <0x6501d04c 0x4>;
+			clocks = <&osc>;
+			clock-output-names = "lcpll_ddr", "pcie_sata_usb",
+					     "ddr", "ddr_ch2_unused",
+					     "ddr_ch3_unused", "ddr_ch4_unused",
+					     "ddr_ch5_unused";
+		};
+
+		lcpll_ports: lcpll_ports at 6501d078 {
+			#clock-cells = <1>;
+			compatible = "brcm,ns2-lcpll-ports";
+			reg = <0x6501d078 0x20>,
+			      <0x6501c020 0x4>,
+			      <0x6501d054 0x4>;
+			clocks = <&osc>;
+			clock-output-names = "lcpll_ports", "wan", "rgmii",
+					     "ports_ch2_unused",
+					     "ports_ch3_unused",
+					     "ports_ch4_unused",
+					     "ports_ch5_unused";
+		};
+
+		genpll_scr: genpll_scr at 6501d098 {
+			#clock-cells = <1>;
+			compatible = "brcm,ns2-genpll-scr";
+			reg = <0x6501d098 0x32>,
+			      <0x6501c020 0x4>,
+			      <0x6501d044 0x4>;
+			clocks = <&osc>;
+			clock-output-names = "genpll_scr", "scr", "fs",
+					     "audio_ref", "scr_ch3_unused",
+					     "scr_ch4_unused", "scr_ch5_unused";
+		};
+
+		genpll_sw: genpll_sw at 6501d0c4 {
+			#clock-cells = <1>;
+			compatible = "brcm,ns2-genpll-sw";
+			reg = <0x6501d0c4 0x32>,
+			      <0x6501c020 0x4>,
+			      <0x6501d044 0x4>;
+			clocks = <&osc>;
+			clock-output-names = "genpll_sw", "rpe", "250", "nic",
+					     "chimp", "port", "sdio";
+		};
+
 		crmu: crmu at 65024000 {
 			compatible = "syscon";
 			reg = <0x65024000 0x100>;
@@ -204,7 +282,7 @@
 			interrupts = <GIC_SPI 393 IRQ_TYPE_LEVEL_HIGH>;
 			reg-shift = <2>;
 			reg-io-width = <4>;
-			clock-frequency = <23961600>;
+			clocks = <&osc>;
 			status = "disabled";
 		};
 
-- 
1.9.1

[PATCH 3/3] ARM64: dts: enable clock support for Broadcom NS2

[Ray Jui]

On 11/18/2015 3:13 PM, Jon Mason wrote:
> Add device tree entries for clock support for Broadcom Northstar 2 SoC
>
> Signed-off-by: Jon Mason <jonmason@broadcom.com>
> ---
>   arch/arm64/boot/dts/broadcom/ns2.dtsi | 80 ++++++++++++++++++++++++++++++++++-
>   1 file changed, 79 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/broadcom/ns2.dtsi b/arch/arm64/boot/dts/broadcom/ns2.dtsi
> index 9610822..a510d3a 100644
> --- a/arch/arm64/boot/dts/broadcom/ns2.dtsi
> +++ b/arch/arm64/boot/dts/broadcom/ns2.dtsi
> @@ -31,6 +31,7 @@
>    */
>
>   #include <dt-bindings/interrupt-controller/arm-gic.h>
> +#include <dt-bindings/clock/bcm-ns2.h>
>
>   /memreserve/ 0x84b00000 0x00000008;
>
> @@ -109,6 +110,33 @@
>   				     <&A57_3>;
>   	};
>
> +	clocks {

Is this a new convention? That is, group all clocks without a base 
register address in a node named "clocks", but at the same time, put all 
other clocks with base register address under a bus node.

> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +
> +		osc: oscillator {
> +			#clock-cells = <0>;
> +			compatible = "fixed-clock";
> +			clock-frequency = <25000000>;
> +		};
> +
> +		iprocmed: iprocmed {
> +			#clock-cells = <0>;
> +			compatible = "fixed-factor-clock";
> +			clocks = <&genpll_scr BCM_NS2_GENPLL_SCR_SCR_CLK>;
> +			clock-div = <2>;
> +			clock-mult = <1>;
> +		};
> +
> +		iprocslow: iprocslow {
> +			#clock-cells = <0>;
> +			compatible = "fixed-factor-clock";
> +			clocks = <&genpll_scr BCM_NS2_GENPLL_SCR_SCR_CLK>;
> +			clock-div = <4>;
> +			clock-mult = <1>;
> +		};
> +	};
> +
>   	soc: soc {
>   		compatible = "simple-bus";
>   		#address-cells = <1>;
> @@ -156,6 +184,56 @@
>   			mmu-masters;
>   		};
>
> +		lcpll_ddr: lcpll_ddr at 6501d058 {
> +			#clock-cells = <1>;
> +			compatible = "brcm,ns2-lcpll-ddr";
> +			reg = <0x6501d058 0x20>,
> +			      <0x6501c020 0x4>,
> +			      <0x6501d04c 0x4>;
> +			clocks = <&osc>;
> +			clock-output-names = "lcpll_ddr", "pcie_sata_usb",
> +					     "ddr", "ddr_ch2_unused",
> +					     "ddr_ch3_unused", "ddr_ch4_unused",
> +					     "ddr_ch5_unused";
> +		};
> +
> +		lcpll_ports: lcpll_ports at 6501d078 {
> +			#clock-cells = <1>;
> +			compatible = "brcm,ns2-lcpll-ports";
> +			reg = <0x6501d078 0x20>,
> +			      <0x6501c020 0x4>,
> +			      <0x6501d054 0x4>;
> +			clocks = <&osc>;
> +			clock-output-names = "lcpll_ports", "wan", "rgmii",
> +					     "ports_ch2_unused",
> +					     "ports_ch3_unused",
> +					     "ports_ch4_unused",
> +					     "ports_ch5_unused";
> +		};
> +
> +		genpll_scr: genpll_scr at 6501d098 {
> +			#clock-cells = <1>;
> +			compatible = "brcm,ns2-genpll-scr";
> +			reg = <0x6501d098 0x32>,
> +			      <0x6501c020 0x4>,
> +			      <0x6501d044 0x4>;
> +			clocks = <&osc>;
> +			clock-output-names = "genpll_scr", "scr", "fs",
> +					     "audio_ref", "scr_ch3_unused",
> +					     "scr_ch4_unused", "scr_ch5_unused";
> +		};
> +
> +		genpll_sw: genpll_sw at 6501d0c4 {
> +			#clock-cells = <1>;
> +			compatible = "brcm,ns2-genpll-sw";
> +			reg = <0x6501d0c4 0x32>,
> +			      <0x6501c020 0x4>,
> +			      <0x6501d044 0x4>;
> +			clocks = <&osc>;
> +			clock-output-names = "genpll_sw", "rpe", "250", "nic",
> +					     "chimp", "port", "sdio";
> +		};
> +
>   		crmu: crmu at 65024000 {
>   			compatible = "syscon";
>   			reg = <0x65024000 0x100>;
> @@ -204,7 +282,7 @@
>   			interrupts = <GIC_SPI 393 IRQ_TYPE_LEVEL_HIGH>;
>   			reg-shift = <2>;
>   			reg-io-width = <4>;
> -			clock-frequency = <23961600>;
> +			clocks = <&osc>;
>   			status = "disabled";
>   		};
>
>

[PATCH 3/3] ARM64: dts: enable clock support for Broadcom NS2

[Florian Fainelli]

On 18/11/15 16:03, Ray Jui wrote:
> 
> 
> On 11/18/2015 3:13 PM, Jon Mason wrote:
>> Add device tree entries for clock support for Broadcom Northstar 2 SoC
>>
>> Signed-off-by: Jon Mason <jonmason@broadcom.com>
>> ---
>>   arch/arm64/boot/dts/broadcom/ns2.dtsi | 80
>> ++++++++++++++++++++++++++++++++++-
>>   1 file changed, 79 insertions(+), 1 deletion(-)
>>
>> diff --git a/arch/arm64/boot/dts/broadcom/ns2.dtsi
>> b/arch/arm64/boot/dts/broadcom/ns2.dtsi
>> index 9610822..a510d3a 100644
>> --- a/arch/arm64/boot/dts/broadcom/ns2.dtsi
>> +++ b/arch/arm64/boot/dts/broadcom/ns2.dtsi
>> @@ -31,6 +31,7 @@
>>    */
>>
>>   #include <dt-bindings/interrupt-controller/arm-gic.h>
>> +#include <dt-bindings/clock/bcm-ns2.h>
>>
>>   /memreserve/ 0x84b00000 0x00000008;
>>
>> @@ -109,6 +110,33 @@
>>                        <&A57_3>;
>>       };
>>
>> +    clocks {
> 
> Is this a new convention? That is, group all clocks without a base
> register address in a node named "clocks", but at the same time, put all
> other clocks with base register address under a bus node.

I do not think that is new, lots of platforms do that. The clock
providers/controllers would typically be in the 'bus' nodes because it
has a register interface, while the synthetic clocks would be under
'clocks'.
-- 
Florian

[PATCH 3/3] ARM64: dts: enable clock support for Broadcom NS2

[Ray Jui]

On 11/18/2015 4:07 PM, Florian Fainelli wrote:
> On 18/11/15 16:03, Ray Jui wrote:
>>
>>
>> On 11/18/2015 3:13 PM, Jon Mason wrote:
>>> Add device tree entries for clock support for Broadcom Northstar 2 SoC
>>>
>>> Signed-off-by: Jon Mason <jonmason@broadcom.com>
>>> ---
>>>    arch/arm64/boot/dts/broadcom/ns2.dtsi | 80
>>> ++++++++++++++++++++++++++++++++++-
>>>    1 file changed, 79 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/arch/arm64/boot/dts/broadcom/ns2.dtsi
>>> b/arch/arm64/boot/dts/broadcom/ns2.dtsi
>>> index 9610822..a510d3a 100644
>>> --- a/arch/arm64/boot/dts/broadcom/ns2.dtsi
>>> +++ b/arch/arm64/boot/dts/broadcom/ns2.dtsi
>>> @@ -31,6 +31,7 @@
>>>     */
>>>
>>>    #include <dt-bindings/interrupt-controller/arm-gic.h>
>>> +#include <dt-bindings/clock/bcm-ns2.h>
>>>
>>>    /memreserve/ 0x84b00000 0x00000008;
>>>
>>> @@ -109,6 +110,33 @@
>>>                         <&A57_3>;
>>>        };
>>>
>>> +    clocks {
>>
>> Is this a new convention? That is, group all clocks without a base
>> register address in a node named "clocks", but at the same time, put all
>> other clocks with base register address under a bus node.
>
> I do not think that is new, lots of platforms do that. The clock
> providers/controllers would typically be in the 'bus' nodes because it
> has a register interface, while the synthetic clocks would be under
> 'clocks'.
>

Okay that's very good to know. Thanks!

Ray