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Groups > linux.kernel > #1213856 > unrolled thread

[PATCH 0/4] remoteproc: Add driver for STMicroelectronics platforms

Started byLee Jones <lee.jones@linaro.org>
First post2015-08-26 15:20 +0200
Last post2015-08-26 18:50 +0200
Articles 5 — 2 participants

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  [PATCH 0/4] remoteproc: Add driver for STMicroelectronics platforms Lee Jones <lee.jones@linaro.org> - 2015-08-26 15:20 +0200
    [PATCH 3/4] ARM: STiH407: Add nodes for RemoteProc Lee Jones <lee.jones@linaro.org> - 2015-08-26 15:20 +0200
    [PATCH 1/4] remoteproc: dt: Provide bindings for ST's Remote Processor Controller driver Lee Jones <lee.jones@linaro.org> - 2015-08-26 15:20 +0200
      Re: [PATCH 1/4] remoteproc: dt: Provide bindings for ST's Remote  Processor Controller driver Nathan Lynch <Nathan_Lynch@mentor.com> - 2015-08-26 18:10 +0200
        Re: [PATCH 1/4] remoteproc: dt: Provide bindings for ST's Remote  Processor Controller driver Lee Jones <lee.jones@linaro.org> - 2015-08-26 18:50 +0200

#1213856 — [PATCH 0/4] remoteproc: Add driver for STMicroelectronics platforms

FromLee Jones <lee.jones@linaro.org>
Date2015-08-26 15:20 +0200
Subject[PATCH 0/4] remoteproc: Add driver for STMicroelectronics platforms
Message-ID<q1IMq-6N8-7@gated-at.bofh.it>
ST's platforms often have multiple co-processors (usually ST40s or ST231s)
on-board.  This provides the Linux-side infrastructure to flash and boot
them successfully.

This set has been tested on an STiH410-B2120.

Lee Jones (4):
  remoteproc: dt: Provide bindings for ST's Remote Processor Controller
    driver
  remoteproc: Supply controller driver for ST's Remote Processors
  ARM: STiH407: Add nodes for RemoteProc
  remoteproc: debugfs: Add ability to boot remote processor using
    debugfs

 .../devicetree/bindings/remoteproc/st-rproc.txt    |  38 +++
 arch/arm/boot/dts/stih407-family.dtsi              |  48 ++++
 drivers/remoteproc/Kconfig                         |   9 +
 drivers/remoteproc/Makefile                        |   1 +
 drivers/remoteproc/remoteproc_debugfs.c            |  25 ++
 drivers/remoteproc/st_remoteproc.c                 | 300 +++++++++++++++++++++
 6 files changed, 421 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/remoteproc/st-rproc.txt
 create mode 100644 drivers/remoteproc/st_remoteproc.c

-- 
1.9.1

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#1213857 — [PATCH 3/4] ARM: STiH407: Add nodes for RemoteProc

FromLee Jones <lee.jones@linaro.org>
Date2015-08-26 15:20 +0200
Subject[PATCH 3/4] ARM: STiH407: Add nodes for RemoteProc
Message-ID<q1IMr-6N8-33@gated-at.bofh.it>
In reply to#1213856
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 arch/arm/boot/dts/stih407-family.dtsi | 48 +++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/arch/arm/boot/dts/stih407-family.dtsi b/arch/arm/boot/dts/stih407-family.dtsi
index 33daa49..89a363c 100644
--- a/arch/arm/boot/dts/stih407-family.dtsi
+++ b/arch/arm/boot/dts/stih407-family.dtsi
@@ -608,5 +608,53 @@
 			status		= "okay";
 			tx-only;
 		};
+
+		st231_gp0: st231-gp0@0 {
+			compatible = "st,st231-rproc";
+			reg = <0x40000000 0x01000000>;
+			reg-names = "carveout";
+			resets = <&softreset STIH407_ST231_GP0_SOFTRESET>;
+			reset-names = "sw_reset";
+			clocks = <&clk_s_c0_flexgen CLK_ST231_GP_0>;
+			clock-names = "rproc_clk";
+			clock-frequency = <600000000>;
+			st,syscfg-boot = <&syscfg_core 0x22C>;
+		};
+
+		st231_gp1: st231-gp1@0 {
+			compatible = "st,st231-rproc";
+			reg = <0x41000000 0x01000000>;
+			reg-names = "carveout";
+			resets = <&softreset STIH407_ST231_GP1_SOFTRESET>;
+			reset-names = "sw_reset";
+			clocks = <&clk_s_c0_flexgen CLK_ST231_GP_1>;
+			clock-names = "rproc_clk";
+			clock-frequency = <600000000>;
+			st,syscfg-boot = <&syscfg_core 0x220>;
+		};
+
+		st231_audio: st231-audio@0 {
+			compatible = "st,st231-rproc";
+			reg = <0x42000000 0x01000000>;
+			reg-names = "carveout";
+			resets = <&softreset STIH407_ST231_AUD_SOFTRESET>;
+			reset-names = "sw_reset";
+			clocks = <&clk_s_c0_flexgen CLK_ST231_AUD_0>;
+			clock-names = "rproc_clk";
+			clock-frequency = <600000000>;
+			st,syscfg-boot = <&syscfg_core 0x228>;
+		};
+
+		st231_dmu: st231-dmu@0 {
+			compatible = "st,st231-rproc";
+			reg = <0x43000000 0x01000000>;
+			reg-names = "carveout";
+			resets = <&softreset STIH407_ST231_DMU_SOFTRESET>;
+			reset-names = "sw_reset";
+			clocks = <&clk_s_c0_flexgen CLK_ST231_DMU>;
+			clock-names = "rproc_clk";
+			clock-frequency = <600000000>;
+			st,syscfg-boot = <&syscfg_core 0x224>;
+		};
 	};
 };
-- 
1.9.1

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#1213860 — [PATCH 1/4] remoteproc: dt: Provide bindings for ST's Remote Processor Controller driver

FromLee Jones <lee.jones@linaro.org>
Date2015-08-26 15:20 +0200
Subject[PATCH 1/4] remoteproc: dt: Provide bindings for ST's Remote Processor Controller driver
Message-ID<q1IMr-6N8-43@gated-at.bofh.it>
In reply to#1213856
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 .../devicetree/bindings/remoteproc/st-rproc.txt    | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/remoteproc/st-rproc.txt

diff --git a/Documentation/devicetree/bindings/remoteproc/st-rproc.txt b/Documentation/devicetree/bindings/remoteproc/st-rproc.txt
new file mode 100644
index 0000000..6a933c1
--- /dev/null
+++ b/Documentation/devicetree/bindings/remoteproc/st-rproc.txt
@@ -0,0 +1,38 @@
+STMicroelectronics Remote Processor
+-----------------------------------
+
+This binding provides support for adjunct processors found on ST SoCs.
+
+The remote processors can be controlled from the bootloader or the primary OS.
+If the bootloader starts a remote processor processor the primary OS must detect
+its state and act accordingly.
+
+The node name is significant, as it defines the name of the CPU and the name
+of the firmware to load: "rproc-<name>-fw".
+
+Required properties:
+- compatible		Should be one of:
+				"st,st231-rproc"
+				"st,st40-rproc"
+- reg			Size and length of reserved co-processor memory
+- resets		Reset lines (See: ../reset/reset.txt)
+- reset-names		Must be "sw_reset" and "pwr_reset"
+- clocks		Clock for co-processor (See: ../clock/clock-bindings.txt)
+- clock-names		Must be "rproc_clk"
+- clock-frequency	Clock frequency to set co-processor at if the bootloader
+			hasn't already done so
+- st,syscfg-boot	The register that holds the boot vector for the co-processor
+
+Example:
+
+	st231-audio@bae00000 {
+		compatible	= "st,st231-rproc";
+		reg		= <0xbae00000 0x01000000>;
+		reg-names	= "rproc_mem";
+		resets		= <&softreset STIH407_ST231_AUD_SOFTRESET>;
+		reset-names	= "sw_reset";
+		clocks		= <&clk_s_c0_flexgen CLK_ST231_AUD_0>;
+		clock-names	= "rproc_clk";
+		clock-frequency	= <600000000>;
+		st,syscfg-boot	= <&syscfg_core 0x228>;
+	};
-- 
1.9.1

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#1213985 — Re: [PATCH 1/4] remoteproc: dt: Provide bindings for ST's Remote Processor Controller driver

FromNathan Lynch <Nathan_Lynch@mentor.com>
Date2015-08-26 18:10 +0200
SubjectRe: [PATCH 1/4] remoteproc: dt: Provide bindings for ST's Remote Processor Controller driver
Message-ID<q1LqV-2d7-7@gated-at.bofh.it>
In reply to#1213860
On 08/26/2015 08:08 AM, Lee Jones wrote:
> diff --git a/Documentation/devicetree/bindings/remoteproc/st-rproc.txt b/Documentation/devicetree/bindings/remoteproc/st-rproc.txt
> new file mode 100644
> index 0000000..6a933c1
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/remoteproc/st-rproc.txt
> @@ -0,0 +1,38 @@
> +STMicroelectronics Remote Processor
> +-----------------------------------
> +
> +This binding provides support for adjunct processors found on ST SoCs.
> +
> +The remote processors can be controlled from the bootloader or the primary OS.
> +If the bootloader starts a remote processor processor the primary OS must detect
> +its state and act accordingly.
> +
> +The node name is significant, as it defines the name of the CPU and the name
> +of the firmware to load: "rproc-<name>-fw".

This business about the firmware name describes a behavior of Linux's
core remoteproc code and seems out of place in a binding document.

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#1214037 — Re: [PATCH 1/4] remoteproc: dt: Provide bindings for ST's Remote Processor Controller driver

FromLee Jones <lee.jones@linaro.org>
Date2015-08-26 18:50 +0200
SubjectRe: [PATCH 1/4] remoteproc: dt: Provide bindings for ST's Remote Processor Controller driver
Message-ID<q1M3E-2Xd-13@gated-at.bofh.it>
In reply to#1213985
On Wed, 26 Aug 2015, Nathan Lynch wrote:

> On 08/26/2015 08:08 AM, Lee Jones wrote:
> > diff --git a/Documentation/devicetree/bindings/remoteproc/st-rproc.txt b/Documentation/devicetree/bindings/remoteproc/st-rproc.txt
> > new file mode 100644
> > index 0000000..6a933c1
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/remoteproc/st-rproc.txt
> > @@ -0,0 +1,38 @@
> > +STMicroelectronics Remote Processor
> > +-----------------------------------
> > +
> > +This binding provides support for adjunct processors found on ST SoCs.
> > +
> > +The remote processors can be controlled from the bootloader or the primary OS.
> > +If the bootloader starts a remote processor processor the primary OS must detect
> > +its state and act accordingly.
> > +
> > +The node name is significant, as it defines the name of the CPU and the name
> > +of the firmware to load: "rproc-<name>-fw".
> 
> This business about the firmware name describes a behavior of Linux's
> core remoteproc code and seems out of place in a binding document.

Agreed, will remove.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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