summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--Documentation/devicetree/bindings/clock/imx28-clock.txt99
-rw-r--r--arch/arm/boot/dts/imx28.dtsi35
-rw-r--r--drivers/clk/mxs/clk-imx28.c113
3 files changed, 142 insertions, 105 deletions
diff --git a/Documentation/devicetree/bindings/clock/imx28-clock.txt b/Documentation/devicetree/bindings/clock/imx28-clock.txt
new file mode 100644
index 0000000..aa2af28
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/imx28-clock.txt
@@ -0,0 +1,99 @@
+* Clock bindings for Freescale i.MX28
+
+Required properties:
+- compatible: Should be "fsl,imx28-clkctrl"
+- reg: Address and length of the register set
+- #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.MX28
+clocks and IDs.
+
+ Clock ID
+ ------------------
+ ref_xtal 0
+ pll0 1
+ pll1 2
+ pll2 3
+ ref_cpu 4
+ ref_emi 5
+ ref_io0 6
+ ref_io1 7
+ ref_pix 8
+ ref_hsadc 9
+ ref_gpmi 10
+ saif0_sel 11
+ saif1_sel 12
+ gpmi_sel 13
+ ssp0_sel 14
+ ssp1_sel 15
+ ssp2_sel 16
+ ssp3_sel 17
+ emi_sel 18
+ etm_sel 19
+ lcdif_sel 20
+ cpu 21
+ ptp_sel 22
+ cpu_pll 23
+ cpu_xtal 24
+ hbus 25
+ xbus 26
+ ssp0_div 27
+ ssp1_div 28
+ ssp2_div 29
+ ssp3_div 30
+ gpmi_div 31
+ emi_pll 32
+ emi_xtal 33
+ lcdif_div 34
+ etm_div 35
+ ptp 36
+ saif0_div 37
+ saif1_div 38
+ clk32k_div 39
+ rtc 40
+ lradc 41
+ spdif_div 42
+ clk32k 43
+ pwm 44
+ uart 45
+ ssp0 46
+ ssp1 47
+ ssp2 48
+ ssp3 49
+ gpmi 50
+ spdif 51
+ emi 52
+ saif0 53
+ saif1 54
+ lcdif 55
+ etm 56
+ fec 57
+ can0 58
+ can1 59
+ usb0 60
+ usb1 61
+ usb0_pwr 62
+ usb1_pwr 63
+ enet_out 64
+
+Examples:
+
+clks: clkctrl@80040000 {
+ compatible = "fsl,imx28-clkctrl";
+ reg = <0x80040000 0x2000>;
+ #clock-cells = <1>;
+ clock-output-names =
+ ...
+ "uart", /* 45 */
+ ...
+ "end_of_list";
+};
+
+auart0: serial@8006a000 {
+ compatible = "fsl,imx28-auart", "fsl,imx23-auart";
+ reg = <0x8006a000 0x2000>;
+ interrupts = <112 70 71>;
+ clocks = <&clks 45>;
+ status = "disabled";
+};
diff --git a/arch/arm/boot/dts/imx28.dtsi b/arch/arm/boot/dts/imx28.dtsi
index 96fe74e..03e0fef 100644
--- a/arch/arm/boot/dts/imx28.dtsi
+++ b/arch/arm/boot/dts/imx28.dtsi
@@ -65,6 +65,7 @@
dma-apbh@80004000 {
compatible = "fsl,imx28-dma-apbh";
reg = <0x80004000 0x2000>;
+ clocks = <&clks 25>;
};
perfmon@80006000 {
@@ -81,6 +82,7 @@
reg-names = "gpmi-nand", "bch";
interrupts = <88>, <41>;
interrupt-names = "gpmi-dma", "bch";
+ clocks = <&clks 50>;
fsl,gpmi-dma-channel = <4>;
status = "disabled";
};
@@ -90,6 +92,7 @@
#size-cells = <0>;
reg = <0x80010000 0x2000>;
interrupts = <96 82>;
+ clocks = <&clks 46>;
fsl,ssp-dma-channel = <0>;
status = "disabled";
};
@@ -99,6 +102,7 @@
#size-cells = <0>;
reg = <0x80012000 0x2000>;
interrupts = <97 83>;
+ clocks = <&clks 47>;
fsl,ssp-dma-channel = <1>;
status = "disabled";
};
@@ -108,6 +112,7 @@
#size-cells = <0>;
reg = <0x80014000 0x2000>;
interrupts = <98 84>;
+ clocks = <&clks 48>;
fsl,ssp-dma-channel = <2>;
status = "disabled";
};
@@ -117,6 +122,7 @@
#size-cells = <0>;
reg = <0x80016000 0x2000>;
interrupts = <99 85>;
+ clocks = <&clks 49>;
fsl,ssp-dma-channel = <3>;
status = "disabled";
};
@@ -606,6 +612,7 @@
dma-apbx@80024000 {
compatible = "fsl,imx28-dma-apbx";
reg = <0x80024000 0x2000>;
+ clocks = <&clks 26>;
};
dcp@80028000 {
@@ -634,6 +641,7 @@
compatible = "fsl,imx28-lcdif";
reg = <0x80030000 0x2000>;
interrupts = <38 86>;
+ clocks = <&clks 55>;
status = "disabled";
};
@@ -641,6 +649,8 @@
compatible = "fsl,imx28-flexcan", "fsl,p1010-flexcan";
reg = <0x80032000 0x2000>;
interrupts = <8>;
+ clocks = <&clks 58>, <&clks 58>;
+ clock-names = "ipg", "per";
status = "disabled";
};
@@ -648,6 +658,8 @@
compatible = "fsl,imx28-flexcan", "fsl,p1010-flexcan";
reg = <0x80034000 0x2000>;
interrupts = <9>;
+ clocks = <&clks 59>, <&clks 59>;
+ clock-names = "ipg", "per";
status = "disabled";
};
@@ -694,15 +706,17 @@
reg = <0x80040000 0x40000>;
ranges;
- clkctl@80040000 {
+ clks: clkctrl@80040000 {
+ compatible = "fsl,imx28-clkctrl";
reg = <0x80040000 0x2000>;
- status = "disabled";
+ #clock-cells = <1>;
};
saif0: saif@80042000 {
compatible = "fsl,imx28-saif";
reg = <0x80042000 0x2000>;
interrupts = <59 80>;
+ clocks = <&clks 53>;
fsl,saif-dma-channel = <4>;
status = "disabled";
};
@@ -716,6 +730,7 @@
compatible = "fsl,imx28-saif";
reg = <0x80046000 0x2000>;
interrupts = <58 81>;
+ clocks = <&clks 54>;
fsl,saif-dma-channel = <5>;
status = "disabled";
};
@@ -763,6 +778,7 @@
pwm: pwm@80064000 {
compatible = "fsl,imx28-pwm", "fsl,imx23-pwm";
reg = <0x80064000 0x2000>;
+ clocks = <&clks 44>;
#pwm-cells = <2>;
fsl,pwm-number = <8>;
status = "disabled";
@@ -777,6 +793,7 @@
compatible = "fsl,imx28-auart", "fsl,imx23-auart";
reg = <0x8006a000 0x2000>;
interrupts = <112 70 71>;
+ clocks = <&clks 45>;
status = "disabled";
};
@@ -784,6 +801,7 @@
compatible = "fsl,imx28-auart", "fsl,imx23-auart";
reg = <0x8006c000 0x2000>;
interrupts = <113 72 73>;
+ clocks = <&clks 45>;
status = "disabled";
};
@@ -791,6 +809,7 @@
compatible = "fsl,imx28-auart", "fsl,imx23-auart";
reg = <0x8006e000 0x2000>;
interrupts = <114 74 75>;
+ clocks = <&clks 45>;
status = "disabled";
};
@@ -798,6 +817,7 @@
compatible = "fsl,imx28-auart", "fsl,imx23-auart";
reg = <0x80070000 0x2000>;
interrupts = <115 76 77>;
+ clocks = <&clks 45>;
status = "disabled";
};
@@ -805,6 +825,7 @@
compatible = "fsl,imx28-auart", "fsl,imx23-auart";
reg = <0x80072000 0x2000>;
interrupts = <116 78 79>;
+ clocks = <&clks 45>;
status = "disabled";
};
@@ -812,18 +833,22 @@
compatible = "arm,pl011", "arm,primecell";
reg = <0x80074000 0x1000>;
interrupts = <47>;
+ clocks = <&clks 45>, <&clks 26>;
+ clock-names = "uart", "apb_pclk";
status = "disabled";
};
usbphy0: usbphy@8007c000 {
compatible = "fsl,imx28-usbphy", "fsl,imx23-usbphy";
reg = <0x8007c000 0x2000>;
+ clocks = <&clks 62>;
status = "disabled";
};
usbphy1: usbphy@8007e000 {
compatible = "fsl,imx28-usbphy", "fsl,imx23-usbphy";
reg = <0x8007e000 0x2000>;
+ clocks = <&clks 63>;
status = "disabled";
};
};
@@ -840,6 +865,7 @@
compatible = "fsl,imx28-usb", "fsl,imx27-usb";
reg = <0x80080000 0x10000>;
interrupts = <93>;
+ clocks = <&clks 60>;
fsl,usbphy = <&usbphy0>;
status = "disabled";
};
@@ -848,6 +874,7 @@
compatible = "fsl,imx28-usb", "fsl,imx27-usb";
reg = <0x80090000 0x10000>;
interrupts = <92>;
+ clocks = <&clks 61>;
fsl,usbphy = <&usbphy1>;
status = "disabled";
};
@@ -861,6 +888,8 @@
compatible = "fsl,imx28-fec";
reg = <0x800f0000 0x4000>;
interrupts = <101>;
+ clocks = <&clks 57>, <&clks 57>;
+ clock-names = "ipg", "ahb";
status = "disabled";
};
@@ -868,6 +897,8 @@
compatible = "fsl,imx28-fec";
reg = <0x800f4000 0x4000>;
interrupts = <102>;
+ clocks = <&clks 57>, <&clks 57>;
+ clock-names = "ipg", "ahb";
status = "disabled";
};
diff --git a/drivers/clk/mxs/clk-imx28.c b/drivers/clk/mxs/clk-imx28.c
index e3aab67..613e76f 100644
--- a/drivers/clk/mxs/clk-imx28.c
+++ b/drivers/clk/mxs/clk-imx28.c
@@ -14,6 +14,7 @@
#include <linux/err.h>
#include <linux/init.h>
#include <linux/io.h>
+#include <linux/of.h>
#include <mach/common.h>
#include <mach/mx28.h>
#include "clk.h"
@@ -120,90 +121,6 @@ static void __init clk_misc_init(void)
writel_relaxed(val, FRAC0);
}
-static struct clk_lookup uart_lookups[] = {
- { .dev_id = "duart", },
- { .dev_id = "mxs-auart.0", },
- { .dev_id = "mxs-auart.1", },
- { .dev_id = "mxs-auart.2", },
- { .dev_id = "mxs-auart.3", },
- { .dev_id = "mxs-auart.4", },
- { .dev_id = "8006a000.serial", },
- { .dev_id = "8006c000.serial", },
- { .dev_id = "8006e000.serial", },
- { .dev_id = "80070000.serial", },
- { .dev_id = "80072000.serial", },
- { .dev_id = "80074000.serial", },
-};
-
-static struct clk_lookup hbus_lookups[] = {
- { .dev_id = "imx28-dma-apbh", },
- { .dev_id = "80004000.dma-apbh", },
-};
-
-static struct clk_lookup xbus_lookups[] = {
- { .dev_id = "duart", .con_id = "apb_pclk"},
- { .dev_id = "80074000.serial", .con_id = "apb_pclk"},
- { .dev_id = "imx28-dma-apbx", },
- { .dev_id = "80024000.dma-apbx", },
-};
-
-static struct clk_lookup ssp0_lookups[] = {
- { .dev_id = "imx28-mmc.0", },
- { .dev_id = "80010000.ssp", },
-};
-
-static struct clk_lookup ssp1_lookups[] = {
- { .dev_id = "imx28-mmc.1", },
- { .dev_id = "80012000.ssp", },
-};
-
-static struct clk_lookup ssp2_lookups[] = {
- { .dev_id = "imx28-mmc.2", },
- { .dev_id = "80014000.ssp", },
-};
-
-static struct clk_lookup ssp3_lookups[] = {
- { .dev_id = "imx28-mmc.3", },
- { .dev_id = "80016000.ssp", },
-};
-
-static struct clk_lookup lcdif_lookups[] = {
- { .dev_id = "imx28-fb", },
- { .dev_id = "80030000.lcdif", },
-};
-
-static struct clk_lookup gpmi_lookups[] = {
- { .dev_id = "imx28-gpmi-nand", },
- { .dev_id = "8000c000.gpmi-nand", },
-};
-
-static struct clk_lookup fec_lookups[] = {
- { .dev_id = "imx28-fec.0", },
- { .dev_id = "imx28-fec.1", },
- { .dev_id = "800f0000.ethernet", },
- { .dev_id = "800f4000.ethernet", },
-};
-
-static struct clk_lookup can0_lookups[] = {
- { .dev_id = "flexcan.0", },
- { .dev_id = "80032000.can", },
-};
-
-static struct clk_lookup can1_lookups[] = {
- { .dev_id = "flexcan.1", },
- { .dev_id = "80034000.can", },
-};
-
-static struct clk_lookup saif0_lookups[] = {
- { .dev_id = "mxs-saif.0", },
- { .dev_id = "80042000.saif", },
-};
-
-static struct clk_lookup saif1_lookups[] = {
- { .dev_id = "mxs-saif.1", },
- { .dev_id = "80046000.saif", },
-};
-
static const char *sel_cpu[] __initconst = { "ref_cpu", "ref_xtal", };
static const char *sel_io0[] __initconst = { "ref_io0", "ref_xtal", };
static const char *sel_io1[] __initconst = { "ref_io1", "ref_xtal", };
@@ -228,6 +145,7 @@ enum imx28_clk {
};
static struct clk *clks[clk_max];
+static struct clk_onecell_data clk_data;
static enum imx28_clk clks_init_on[] __initdata = {
cpu, hbus, xbus, emi, uart,
@@ -235,6 +153,7 @@ static enum imx28_clk clks_init_on[] __initdata = {
int __init mx28_clocks_init(void)
{
+ struct device_node *np;
int i;
clk_misc_init();
@@ -312,27 +231,15 @@ int __init mx28_clocks_init(void)
return PTR_ERR(clks[i]);
}
+ np = of_find_compatible_node(NULL, NULL, "fsl,imx28-clkctrl");
+ if (np) {
+ clk_data.clks = clks;
+ clk_data.clk_num = ARRAY_SIZE(clks);
+ of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
+ }
+
clk_register_clkdev(clks[clk32k], NULL, "timrot");
clk_register_clkdev(clks[enet_out], NULL, "enet_out");
- clk_register_clkdev(clks[pwm], NULL, "80064000.pwm");
- clk_register_clkdevs(clks[hbus], hbus_lookups, ARRAY_SIZE(hbus_lookups));
- clk_register_clkdevs(clks[xbus], xbus_lookups, ARRAY_SIZE(xbus_lookups));
- clk_register_clkdevs(clks[uart], uart_lookups, ARRAY_SIZE(uart_lookups));
- clk_register_clkdevs(clks[ssp0], ssp0_lookups, ARRAY_SIZE(ssp0_lookups));
- clk_register_clkdevs(clks[ssp1], ssp1_lookups, ARRAY_SIZE(ssp1_lookups));
- clk_register_clkdevs(clks[ssp2], ssp2_lookups, ARRAY_SIZE(ssp2_lookups));
- clk_register_clkdevs(clks[ssp3], ssp3_lookups, ARRAY_SIZE(ssp3_lookups));
- clk_register_clkdevs(clks[gpmi], gpmi_lookups, ARRAY_SIZE(gpmi_lookups));
- clk_register_clkdevs(clks[saif0], saif0_lookups, ARRAY_SIZE(saif0_lookups));
- clk_register_clkdevs(clks[saif1], saif1_lookups, ARRAY_SIZE(saif1_lookups));
- clk_register_clkdevs(clks[lcdif], lcdif_lookups, ARRAY_SIZE(lcdif_lookups));
- clk_register_clkdevs(clks[fec], fec_lookups, ARRAY_SIZE(fec_lookups));
- clk_register_clkdevs(clks[can0], can0_lookups, ARRAY_SIZE(can0_lookups));
- clk_register_clkdevs(clks[can1], can1_lookups, ARRAY_SIZE(can1_lookups));
- clk_register_clkdev(clks[usb0_pwr], NULL, "8007c000.usbphy");
- clk_register_clkdev(clks[usb1_pwr], NULL, "8007e000.usbphy");
- clk_register_clkdev(clks[usb0], NULL, "80080000.usb");
- clk_register_clkdev(clks[usb1], NULL, "80090000.usb");
for (i = 0; i < ARRAY_SIZE(clks_init_on); i++)
clk_prepare_enable(clks[clks_init_on[i]]);
generated by cgit v0.10.2 at 2024-08-02 18:16:04 (GMT)