Commit a55a3d72 authored by Steffen Trumtrar's avatar Steffen Trumtrar Committed by Shawn Guo
Browse files

ARM i.MX35: Add devicetree support. 



Cc: linux-arm-kernel@lists.infradead.org
Cc: Eric Bénard <eric@eukrea.com>
Signed-off-by: default avatarSteffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: default avatarUwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: default avatarDenis Carikli <denis@eukrea.com>
Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
parent 920c9648

Documentation/devicetree/bindings/clock/imx35-clock.txt

0 → 100644
+113 −0
Original line number Diff line number Diff line 
* Clock bindings for Freescale i.MX35



Required properties:

- compatible: Should be "fsl,imx35-ccm"

- reg: Address and length of the register set

- interrupts: Should contain CCM interrupt

- #clock-cells: Should be <1>



The clock consumer should specify the desired clock by having the clock

ID in its "clocks" phandle cell.  The following is a full list of i.MX35

clocks and IDs.



	Clock			ID

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

	ckih			0

	mpll			1

	ppll			2

	mpll_075		3

	arm			4

	hsp			5

	hsp_div			6

	hsp_sel			7

	ahb			8

	ipg			9

	arm_per_div		10

	ahb_per_div		11

	ipg_per			12

	uart_sel		13

	uart_div		14

	esdhc_sel		15

	esdhc1_div		16

	esdhc2_div		17

	esdhc3_div		18

	spdif_sel		19

	spdif_div_pre		20

	spdif_div_post		21

	ssi_sel			22

	ssi1_div_pre		23

	ssi1_div_post		24

	ssi2_div_pre		25

	ssi2_div_post		26

	usb_sel			27

	usb_div			28

	nfc_div			29

	asrc_gate		30

	pata_gate		31

	audmux_gate		32

	can1_gate		33

	can2_gate		34

	cspi1_gate		35

	cspi2_gate		36

	ect_gate		37

	edio_gate		38

	emi_gate		39

	epit1_gate		40

	epit2_gate		41

	esai_gate		42

	esdhc1_gate		43

	esdhc2_gate		44

	esdhc3_gate		45

	fec_gate		46

	gpio1_gate		47

	gpio2_gate		48

	gpio3_gate		49

	gpt_gate		50

	i2c1_gate		51

	i2c2_gate		52

	i2c3_gate		53

	iomuxc_gate		54

	ipu_gate		55

	kpp_gate		56

	mlb_gate		57

	mshc_gate		58

	owire_gate		59

	pwm_gate		60

	rngc_gate		61

	rtc_gate		62

	rtic_gate		63

	scc_gate		64

	sdma_gate		65

	spba_gate		66

	spdif_gate		67

	ssi1_gate		68

	ssi2_gate		69

	uart1_gate		70

	uart2_gate		71

	uart3_gate		72

	usbotg_gate		73

	wdog_gate		74

	max_gate		75

	admux_gate		76

	csi_gate		77

	csi_div			78

	csi_sel			79

	iim_gate		80

	gpu2d_gate		81



Examples:



clks: ccm@53f80000 {

	compatible = "fsl,imx35-ccm";

	reg = <0x53f80000 0x4000>;

	interrupts = <31>;

	#clock-cells = <1>;

};



esdhc1: esdhc@53fb4000 {

	compatible = "fsl,imx35-esdhc";

	reg = <0x53fb4000 0x4000>;

	interrupts = <7>;

	clocks = <&clks 9>, <&clks 8>, <&clks 43>;

	clock-names = "ipg", "ahb", "per";

};

arch/arm/mach-imx/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -126,6 +126,7 @@ config SOC_IMX35 
	select HAVE_EPIT

	select MXC_AVIC

	select SMP_ON_UP if SMP

	select PINCTRL



config SOC_IMX5

	bool
@@ -611,6 +612,13 @@ config MACH_IMX31_DT 


comment "MX35 platforms:"



config MACH_IMX35_DT

	bool "Support i.MX35 platforms from device tree"

	select SOC_IMX35

	help

	  Include support for Freescale i.MX35 based platforms

	  using the device tree for discovery.



config MACH_PCM043

	bool "Support Phytec pcm043 (i.MX35) platforms"

	select IMX_HAVE_PLATFORM_FLEXCAN

arch/arm/mach-imx/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -89,6 +89,7 @@ obj-$(CONFIG_MACH_MX35_3DS) += mach-mx35_3ds.o 
obj-$(CONFIG_MACH_EUKREA_CPUIMX35SD) += mach-cpuimx35.o

obj-$(CONFIG_MACH_EUKREA_MBIMXSD35_BASEBOARD) += eukrea_mbimxsd35-baseboard.o

obj-$(CONFIG_MACH_VPR200) += mach-vpr200.o

obj-$(CONFIG_MACH_IMX35_DT) += imx35-dt.o



obj-$(CONFIG_HAVE_IMX_ANATOP) += anatop.o

obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o

arch/arm/mach-imx/clk-imx35.c

+14 −0
Original line number Diff line number Diff line
@@ -45,6 +45,8 @@ static struct arm_ahb_div clk_consumer[] = { 
static char hsp_div_532[] = { 4, 8, 3, 0 };

static char hsp_div_400[] = { 3, 6, 3, 0 };



static struct clk_onecell_data clk_data;



static const char *std_sel[] = {"ppll", "arm"};

static const char *ipg_per_sel[] = {"ahb_per_div", "arm_per_div"};
@@ -286,3 +288,15 @@ int __init mx35_clocks_init(void) 


	return 0;

}



static int __init mx35_clocks_init_dt(struct device_node *ccm_node)

{

	clk_data.clks = clk;

	clk_data.clk_num = ARRAY_SIZE(clk);

	of_clk_add_provider(ccm_node, of_clk_src_onecell_get, &clk_data);



	mx35_clocks_init();



	return 0;

}

CLK_OF_DECLARE(imx35, "fsl,imx35-ccm", mx35_clocks_init_dt);

arch/arm/mach-imx/imx35-dt.c

0 → 100644
+50 −0
Original line number Diff line number Diff line 
/*

 * Copyright 2012 Steffen Trumtrar, Pengutronix

 *

 * based on imx27-dt.c

 *

 * This program is free software; you can redistribute it and/or modify it under

 * the terms of the GNU General Public License version 2 as published by the

 * Free Software Foundation.

 */



#include <linux/irq.h>

#include <linux/irqdomain.h>

#include <linux/of_irq.h>

#include <linux/of_platform.h>

#include <linux/clk-provider.h>

#include <linux/clocksource.h>

#include <asm/mach/arch.h>

#include <asm/mach/time.h>

#include <asm/hardware/cache-l2x0.h>

#include "common.h"

#include "mx35.h"



static void __init imx35_dt_init(void)

{

	mxc_arch_reset_init_dt();



	of_platform_populate(NULL, of_default_bus_match_table,

			     NULL, NULL);

}



static void __init imx35_irq_init(void)

{

	imx_init_l2cache();

	mx35_init_irq();

}



static const char *imx35_dt_board_compat[] __initconst = {

	"fsl,imx35",

	NULL

};



DT_MACHINE_START(IMX35_DT, "Freescale i.MX35 (Device Tree Support)")

	.map_io		= mx35_map_io,

	.init_early	= imx35_init_early,

	.init_irq	= imx35_irq_init,

	.handle_irq	= imx35_handle_irq,

	.init_machine	= imx35_dt_init,

	.dt_compat	= imx35_dt_board_compat,

	.restart	= mxc_restart,

MACHINE_END

CRA Git | Maintained and supported by SUSTech CRA and CCSE