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Commit 85b80b6b authored by Olof Johansson's avatar Olof Johansson
Browse files

Merge tag 'ux500-core-for-arm-soc' of... 

Merge tag 'ux500-core-for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into next/soc

Merge "Ux500 core changes for v3.19" from Linus Walleij:

"please pull in these Ux500 core changes for this kernel development
cycle: mainly a generic power domain implementation from Ulf Hansson
that needs to get queued up in -next and tested."

Generic power domains for the Ux500

* tag 'ux500-core-for-arm-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
  ARM: ux500: Add i2c devices to the VAPE PM domain
  ARM: ux500: Add spi and ssp devices to the VAPE PM domain
  ARM: ux500: Add sdi devices to the VAPE PM domain
  ARM: ux500: Add DT node for ux500 PM domains
  ARM: ux500: Enable Kconfig for the generic PM domain
  ARM: ux500: Initial support for PM domains
  dt: bindings: ux500: Add header for PM domains specifiers
  dt: bindings: ux500: Add documentation for PM domains
  ARM: u300: Convert pr_warning to pr_warn
parents c6c65189 29417fe8

Documentation/devicetree/bindings/arm/ux500/power_domain.txt

0 → 100644
+35 −0
Original line number Diff line number Diff line 
* ST-Ericsson UX500 PM Domains



UX500 supports multiple PM domains which are used to gate power to one or

more peripherals on the SOC.



The implementation of PM domains for UX500 are based upon the generic PM domain

and use the corresponding DT bindings.



==PM domain providers==



Required properties:

 - compatible: Must be "stericsson,ux500-pm-domains".

 - #power-domain-cells : Number of cells in a power domain specifier, must be 1.



Example:

	pm_domains: pm_domains0 {

		compatible = "stericsson,ux500-pm-domains";

		#power-domain-cells = <1>;

	};



==PM domain consumers==



Required properties:

 - power-domains: A phandle and PM domain specifier. Below are the list of

		valid specifiers:



		Index	Specifier

		-----	---------

		0	DOMAIN_VAPE



Example:

	sdi0_per1@80126000 {

		compatible = "arm,pl18x", "arm,primecell";

		power-domains = <&pm_domains DOMAIN_VAPE>

	};

arch/arm/boot/dts/ste-dbx5x0.dtsi

+22 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ 


#include <dt-bindings/interrupt-controller/irq.h>

#include <dt-bindings/mfd/dbx500-prcmu.h>

#include <dt-bindings/arm/ux500_pm_domains.h>

#include "skeleton.dtsi"



/ {
@@ -43,6 +44,10 @@ 
			interrupts = <0 7 IRQ_TYPE_LEVEL_HIGH>;

		};



		pm_domains: pm_domains0 {

			compatible = "stericsson,ux500-pm-domains";

			#power-domain-cells = <1>;

		};



		clocks {

			compatible = "stericsson,u8500-clks";
@@ -636,6 +641,7 @@ 
			clock-frequency = <400000>;

			clocks = <&prcc_kclk 3 3>, <&prcc_pclk 3 3>;

			clock-names = "i2cclk", "apb_pclk";

			power-domains = <&pm_domains DOMAIN_VAPE>;

		};



		i2c@80122000 {
@@ -651,6 +657,7 @@ 


			clocks = <&prcc_kclk 1 2>, <&prcc_pclk 1 2>;

			clock-names = "i2cclk", "apb_pclk";

			power-domains = <&pm_domains DOMAIN_VAPE>;

		};



		i2c@80128000 {
@@ -666,6 +673,7 @@ 


			clocks = <&prcc_kclk 1 6>, <&prcc_pclk 1 6>;

			clock-names = "i2cclk", "apb_pclk";

			power-domains = <&pm_domains DOMAIN_VAPE>;

		};



		i2c@80110000 {
@@ -681,6 +689,7 @@ 


			clocks = <&prcc_kclk 2 0>, <&prcc_pclk 2 0>;

			clock-names = "i2cclk", "apb_pclk";

			power-domains = <&pm_domains DOMAIN_VAPE>;

		};



		i2c@8012a000 {
@@ -696,6 +705,7 @@ 


			clocks = <&prcc_kclk 1 9>, <&prcc_pclk 1 10>;

			clock-names = "i2cclk", "apb_pclk";

			power-domains = <&pm_domains DOMAIN_VAPE>;

		};



		ssp@80002000 {
@@ -709,6 +719,7 @@ 
			dmas = <&dma 8 0 0x2>, /* Logical - DevToMem */

			       <&dma 8 0 0x0>; /* Logical - MemToDev */

			dma-names = "rx", "tx";

			power-domains = <&pm_domains DOMAIN_VAPE>;

		};



		ssp@80003000 {
@@ -722,6 +733,7 @@ 
			dmas = <&dma 9 0 0x2>, /* Logical - DevToMem */

			       <&dma 9 0 0x0>; /* Logical - MemToDev */

			dma-names = "rx", "tx";

			power-domains = <&pm_domains DOMAIN_VAPE>;

		};



		spi@8011a000 {
@@ -736,6 +748,7 @@ 
			dmas = <&dma 0 0 0x2>, /* Logical - DevToMem */

			       <&dma 0 0 0x0>; /* Logical - MemToDev */

			dma-names = "rx", "tx";

			power-domains = <&pm_domains DOMAIN_VAPE>;

		};



		spi@80112000 {
@@ -750,6 +763,7 @@ 
			dmas = <&dma 35 0 0x2>, /* Logical - DevToMem */

			       <&dma 35 0 0x0>; /* Logical - MemToDev */

			dma-names = "rx", "tx";

			power-domains = <&pm_domains DOMAIN_VAPE>;

		};



		spi@80111000 {
@@ -764,6 +778,7 @@ 
			dmas = <&dma 33 0 0x2>, /* Logical - DevToMem */

			       <&dma 33 0 0x0>; /* Logical - MemToDev */

			dma-names = "rx", "tx";

			power-domains = <&pm_domains DOMAIN_VAPE>;

		};



		spi@80129000 {
@@ -778,6 +793,7 @@ 
			dmas = <&dma 40 0 0x2>, /* Logical - DevToMem */

			       <&dma 40 0 0x0>; /* Logical - MemToDev */

			dma-names = "rx", "tx";

			power-domains = <&pm_domains DOMAIN_VAPE>;

		};



		uart@80120000 {
@@ -836,6 +852,7 @@ 


			clocks = <&prcc_kclk 1 5>, <&prcc_pclk 1 5>;

			clock-names = "sdi", "apb_pclk";

			power-domains = <&pm_domains DOMAIN_VAPE>;



			status = "disabled";

		};
@@ -851,6 +868,7 @@ 


			clocks = <&prcc_kclk 2 4>, <&prcc_pclk 2 6>;

			clock-names = "sdi", "apb_pclk";

			power-domains = <&pm_domains DOMAIN_VAPE>;



			status = "disabled";

		};
@@ -866,6 +884,7 @@ 


			clocks = <&prcc_kclk 3 4>, <&prcc_pclk 3 4>;

			clock-names = "sdi", "apb_pclk";

			power-domains = <&pm_domains DOMAIN_VAPE>;



			status = "disabled";

		};
@@ -881,6 +900,7 @@ 


			clocks = <&prcc_kclk 2 5>, <&prcc_pclk 2 7>;

			clock-names = "sdi", "apb_pclk";

			power-domains = <&pm_domains DOMAIN_VAPE>;



			status = "disabled";

		};
@@ -896,6 +916,7 @@ 


			clocks = <&prcc_kclk 2 2>, <&prcc_pclk 2 4>;

			clock-names = "sdi", "apb_pclk";

			power-domains = <&pm_domains DOMAIN_VAPE>;



			status = "disabled";

		};
@@ -911,6 +932,7 @@ 


			clocks = <&prcc_kclk 3 7>, <&prcc_pclk 3 7>;

			clock-names = "sdi", "apb_pclk";

			power-domains = <&pm_domains DOMAIN_VAPE>;



			status = "disabled";

		};

arch/arm/mach-u300/dummyspichip.c

+29 −36
Original line number Diff line number Diff line
@@ -80,8 +80,8 @@ static ssize_t dummy_looptest(struct device *dev, 
		"in 8bit mode\n");

	status = spi_w8r8(spi, 0xAA);

	if (status < 0)

		pr_warning("Siple test 1: FAILURE: spi_write_then_read "

			   "failed with status %d\n", status);

		pr_warn("Simple test 1: FAILURE: spi_write_then_read failed with status %d\n",

			status);

	else

		pr_info("Simple test 1: SUCCESS!\n");
@@ -89,8 +89,8 @@ static ssize_t dummy_looptest(struct device *dev, 
		"in 8bit mode (full FIFO)\n");

	status = spi_write_then_read(spi, &txbuf[0], 8, &rxbuf[0], 8);

	if (status < 0)

		pr_warning("Simple test 2: FAILURE: spi_write_then_read() "

			   "failed with status %d\n", status);

		pr_warn("Simple test 2: FAILURE: spi_write_then_read() failed with status %d\n",

			status);

	else

		pr_info("Simple test 2: SUCCESS!\n");
@@ -98,8 +98,8 @@ static ssize_t dummy_looptest(struct device *dev, 
		"in 8bit mode (see if we overflow FIFO)\n");

	status = spi_write_then_read(spi, &txbuf[0], 14, &rxbuf[0], 14);

	if (status < 0)

		pr_warning("Simple test 3: FAILURE: failed with status %d "

			   "(probably FIFO overrun)\n", status);

		pr_warn("Simple test 3: FAILURE: failed with status %d (probably FIFO overrun)\n",

			status);

	else

		pr_info("Simple test 3: SUCCESS!\n");
@@ -107,14 +107,14 @@ static ssize_t dummy_looptest(struct device *dev, 
		"bytes garbage with spi_read() in 8bit mode\n");

	status = spi_write(spi, &txbuf[0], 8);

	if (status < 0)

		pr_warning("Simple test 4 step 1: FAILURE: spi_write() "

			   "failed with status %d\n", status);

		pr_warn("Simple test 4 step 1: FAILURE: spi_write() failed with status %d\n",

			status);

	else

		pr_info("Simple test 4 step 1: SUCCESS!\n");

	status = spi_read(spi, &rxbuf[0], 8);

	if (status < 0)

		pr_warning("Simple test 4 step 2: FAILURE: spi_read() "

			   "failed with status %d\n", status);

		pr_warn("Simple test 4 step 2: FAILURE: spi_read() failed with status %d\n",

			status);

	else

		pr_info("Simple test 4 step 2: SUCCESS!\n");
@@ -122,15 +122,13 @@ static ssize_t dummy_looptest(struct device *dev, 
		"14 bytes garbage with spi_read() in 8bit mode\n");

	status = spi_write(spi, &txbuf[0], 14);

	if (status < 0)

		pr_warning("Simple test 5 step 1: FAILURE: spi_write() "

			   "failed with status %d (probably FIFO overrun)\n",

		pr_warn("Simple test 5 step 1: FAILURE: spi_write() failed with status %d (probably FIFO overrun)\n",

			status);

	else

		pr_info("Simple test 5 step 1: SUCCESS!\n");

	status = spi_read(spi, &rxbuf[0], 14);

	if (status < 0)

		pr_warning("Simple test 5 step 2: FAILURE: spi_read() "

			   "failed with status %d (probably FIFO overrun)\n",

		pr_warn("Simple test 5 step 2: FAILURE: spi_read() failed with status %d (probably FIFO overrun)\n",

			status);

	else

		pr_info("Simple test 5: SUCCESS!\n");
@@ -140,15 +138,13 @@ static ssize_t dummy_looptest(struct device *dev, 
		DMA_TEST_SIZE, DMA_TEST_SIZE);

	status = spi_write(spi, &bigtxbuf_virtual[0], DMA_TEST_SIZE);

	if (status < 0)

		pr_warning("Simple test 6 step 1: FAILURE: spi_write() "

			   "failed with status %d (probably FIFO overrun)\n",

		pr_warn("Simple test 6 step 1: FAILURE: spi_write() failed with status %d (probably FIFO overrun)\n",

			status);

	else

		pr_info("Simple test 6 step 1: SUCCESS!\n");

	status = spi_read(spi, &bigrxbuf_virtual[0], DMA_TEST_SIZE);

	if (status < 0)

		pr_warning("Simple test 6 step 2: FAILURE: spi_read() "

			   "failed with status %d (probably FIFO overrun)\n",

		pr_warn("Simple test 6 step 2: FAILURE: spi_read() failed with status %d (probably FIFO overrun)\n",

			status);

	else

		pr_info("Simple test 6: SUCCESS!\n");
@@ -169,18 +165,17 @@ static ssize_t dummy_looptest(struct device *dev, 
		pr_info("Simple test 7: SUCCESS! (expected failure with "

			"status EIO)\n");

	else if (status < 0)

		pr_warning("Siple test 7: FAILURE: spi_write_then_read "

			   "failed with status %d\n", status);

		pr_warn("Simple test 7: FAILURE: spi_write_then_read failed with status %d\n",

			status);

	else

		pr_warning("Siple test 7: FAILURE: spi_write_then_read "

			   "succeeded but it was expected to fail!\n");

		pr_warn("Simple test 7: FAILURE: spi_write_then_read succeeded but it was expected to fail!\n");



	pr_info("Simple test 8: write 8 bytes, read back 8 bytes garbage "

		"in 16bit mode (full FIFO)\n");

	status = spi_write_then_read(spi, &txbuf[0], 8, &rxbuf[0], 8);

	if (status < 0)

		pr_warning("Simple test 8: FAILURE: spi_write_then_read() "

			   "failed with status %d\n", status);

		pr_warn("Simple test 8: FAILURE: spi_write_then_read() failed with status %d\n",

			status);

	else

		pr_info("Simple test 8: SUCCESS!\n");
@@ -188,8 +183,8 @@ static ssize_t dummy_looptest(struct device *dev, 
		"in 16bit mode (see if we overflow FIFO)\n");

	status = spi_write_then_read(spi, &txbuf[0], 14, &rxbuf[0], 14);

	if (status < 0)

		pr_warning("Simple test 9: FAILURE: failed with status %d "

			   "(probably FIFO overrun)\n", status);

		pr_warn("Simple test 9: FAILURE: failed with status %d (probably FIFO overrun)\n",

			status);

	else

		pr_info("Simple test 9: SUCCESS!\n");
@@ -198,16 +193,14 @@ static ssize_t dummy_looptest(struct device *dev, 
	       DMA_TEST_SIZE, DMA_TEST_SIZE);

	status = spi_write(spi, &bigtxbuf_virtual[0], DMA_TEST_SIZE);

	if (status < 0)

		pr_warning("Simple test 10 step 1: FAILURE: spi_write() "

			   "failed with status %d (probably FIFO overrun)\n",

		pr_warn("Simple test 10 step 1: FAILURE: spi_write() failed with status %d (probably FIFO overrun)\n",

			status);

	else

		pr_info("Simple test 10 step 1: SUCCESS!\n");



	status = spi_read(spi, &bigrxbuf_virtual[0], DMA_TEST_SIZE);

	if (status < 0)

		pr_warning("Simple test 10 step 2: FAILURE: spi_read() "

			   "failed with status %d (probably FIFO overrun)\n",

		pr_warn("Simple test 10 step 2: FAILURE: spi_read() failed with status %d (probably FIFO overrun)\n",

			status);

	else

		pr_info("Simple test 10: SUCCESS!\n");

arch/arm/mach-ux500/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -32,6 +32,7 @@ config UX500_SOC_DB8500 
	select PINCTRL_AB8540

	select REGULATOR

	select REGULATOR_DB8500_PRCMU

	select PM_GENERIC_DOMAINS if PM



config MACH_MOP500

	bool "U8500 Development platform, MOP500 versions"

arch/arm/mach-ux500/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -9,5 +9,6 @@ obj-$(CONFIG_MACH_MOP500) += board-mop500-regulators.o \ 
				board-mop500-audio.o

obj-$(CONFIG_SMP)		+= platsmp.o headsmp.o

obj-$(CONFIG_HOTPLUG_CPU)	+= hotplug.o

obj-$(CONFIG_PM_GENERIC_DOMAINS) += pm_domains.o



CFLAGS_hotplug.o		+= -march=armv7-a