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authorLinus Torvalds <torvalds@linux-foundation.org>2013-07-02 14:23:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-07-02 14:23:01 -0700
commitee1a8d402e7e204d57fb108aa40003b6d1633036 (patch)
tree3abf4be63d11bbbd04c89bd668a17533f942b911 /arch/arm/mach-mxs
parent40e71e7015ab85c8606f50736525220948a3b24b (diff)
parent9686bb66a4c50e43ffee903a9fc62237ee2de1e6 (diff)
downloadlinux-ee1a8d402e7e204d57fb108aa40003b6d1633036.tar.bz2
Merge tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC device tree changes from Arnd Bergmann: "These changes from 30 individual branches for the most part update device tree files, but there are also a few source code changes that have crept in this time, usually in order to atomically move over a driver from using hardcoded data to DT probing. A number of platforms change their DT files to use the C preprocessor, which is causing a bit of churn, but that is hopefully only this once" * tag 'dt-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (372 commits) ARM: at91: dt: rm9200ek: add spi support ARM: at91: dt: rm9200: add spi support ARM: at91/DT: at91sam9n12: add SPI DMA client infos ARM: at91/DT: sama5d3: add SPI DMA client infos ARM: at91/DT: fix SPI compatibility string ARM: Kirkwood: Fix the internal register ranges translation ARM: dts: bcm281xx: change comment to C89 style ARM: mmc: bcm281xx SDHCI driver (dt mods) ARM: nomadik: add the new clocks to the device tree clk: nomadik: implement the Nomadik clocks properly ARM: dts: omap5-uevm: Provide USB Host PHY clock frequency ARM: dts: omap4-panda: Fix DVI EDID reads ARM: dts: omap4-panda: Add USB Host support arm: mvebu: enable mini-PCIe connectors on Armada 370 RD ARM: shmobile: irqpin: add a DT property to enable masking on parent ARM: dts: AM43x EPOS EVM support ARM: dts: OMAP5: Add bandgap DT entry ARM: dts: AM33XX: Add pinmux configuration for CPSW to am335x EVM ARM: dts: AM33XX: Add pinmux configuration for CPSW to EVMsk ARM: dts: AM33XX: Add pinmux configuration for CPSW to beaglebone ...
Diffstat (limited to 'arch/arm/mach-mxs')
-rw-r--r--arch/arm/mach-mxs/Kconfig1
-rw-r--r--arch/arm/mach-mxs/mach-mxs.c129
2 files changed, 120 insertions, 10 deletions
diff --git a/arch/arm/mach-mxs/Kconfig b/arch/arm/mach-mxs/Kconfig
index 3a66635e7d17..616fe0210da1 100644
--- a/arch/arm/mach-mxs/Kconfig
+++ b/arch/arm/mach-mxs/Kconfig
@@ -23,6 +23,7 @@ config ARCH_MXS
select GENERIC_CLOCKEVENTS
select HAVE_CLK_PREPARE
select PINCTRL
+ select SOC_BUS
select SOC_IMX23
select SOC_IMX28
select STMP_DEVICE
diff --git a/arch/arm/mach-mxs/mach-mxs.c b/arch/arm/mach-mxs/mach-mxs.c
index d67ecc1c8847..7fa611c1b287 100644
--- a/arch/arm/mach-mxs/mach-mxs.c
+++ b/arch/arm/mach-mxs/mach-mxs.c
@@ -19,13 +19,13 @@
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/init.h>
-#include <linux/irqchip.h>
#include <linux/irqchip/mxs.h>
#include <linux/micrel_phy.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/phy.h>
#include <linux/pinctrl/consumer.h>
+#include <linux/sys_soc.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
@@ -39,12 +39,28 @@
#define MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR0 0x2
#define MXS_DIGCTL_SAIF_CLKMUX_EXTMSTR1 0x3
+#define HW_DIGCTL_CHIPID 0x310
+#define HW_DIGCTL_CHIPID_MASK (0xffff << 16)
+#define HW_DIGCTL_REV_MASK 0xff
+#define HW_DIGCTL_CHIPID_MX23 (0x3780 << 16)
+#define HW_DIGCTL_CHIPID_MX28 (0x2800 << 16)
+
+#define MXS_CHIP_REVISION_1_0 0x10
+#define MXS_CHIP_REVISION_1_1 0x11
+#define MXS_CHIP_REVISION_1_2 0x12
+#define MXS_CHIP_REVISION_1_3 0x13
+#define MXS_CHIP_REVISION_1_4 0x14
+#define MXS_CHIP_REV_UNKNOWN 0xff
+
#define MXS_GPIO_NR(bank, nr) ((bank) * 32 + (nr))
#define MXS_SET_ADDR 0x4
#define MXS_CLR_ADDR 0x8
#define MXS_TOG_ADDR 0xc
+static u32 chipid;
+static u32 socid;
+
static inline void __mxs_setl(u32 mask, void __iomem *reg)
{
__raw_writel(mask, reg + MXS_SET_ADDR);
@@ -352,29 +368,123 @@ static void __init tx28_post_init(void)
pinctrl_put(pctl);
}
-static void __init cfa10049_init(void)
+static void __init crystalfontz_init(void)
{
update_fec_mac_prop(OUI_CRYSTALFONTZ);
}
-static void __init cfa10037_init(void)
+static const char __init *mxs_get_soc_id(void)
{
- update_fec_mac_prop(OUI_CRYSTALFONTZ);
+ struct device_node *np;
+ void __iomem *digctl_base;
+
+ np = of_find_compatible_node(NULL, NULL, "fsl,imx23-digctl");
+ digctl_base = of_iomap(np, 0);
+ WARN_ON(!digctl_base);
+
+ chipid = readl(digctl_base + HW_DIGCTL_CHIPID);
+ socid = chipid & HW_DIGCTL_CHIPID_MASK;
+
+ iounmap(digctl_base);
+ of_node_put(np);
+
+ switch (socid) {
+ case HW_DIGCTL_CHIPID_MX23:
+ return "i.MX23";
+ case HW_DIGCTL_CHIPID_MX28:
+ return "i.MX28";
+ default:
+ return "Unknown";
+ }
+}
+
+static u32 __init mxs_get_cpu_rev(void)
+{
+ u32 rev = chipid & HW_DIGCTL_REV_MASK;
+
+ switch (socid) {
+ case HW_DIGCTL_CHIPID_MX23:
+ switch (rev) {
+ case 0x0:
+ return MXS_CHIP_REVISION_1_0;
+ case 0x1:
+ return MXS_CHIP_REVISION_1_1;
+ case 0x2:
+ return MXS_CHIP_REVISION_1_2;
+ case 0x3:
+ return MXS_CHIP_REVISION_1_3;
+ case 0x4:
+ return MXS_CHIP_REVISION_1_4;
+ default:
+ return MXS_CHIP_REV_UNKNOWN;
+ }
+ case HW_DIGCTL_CHIPID_MX28:
+ switch (rev) {
+ case 0x0:
+ return MXS_CHIP_REVISION_1_1;
+ case 0x1:
+ return MXS_CHIP_REVISION_1_2;
+ default:
+ return MXS_CHIP_REV_UNKNOWN;
+ }
+ default:
+ return MXS_CHIP_REV_UNKNOWN;
+ }
+}
+
+static const char __init *mxs_get_revision(void)
+{
+ u32 rev = mxs_get_cpu_rev();
+
+ if (rev != MXS_CHIP_REV_UNKNOWN)
+ return kasprintf(GFP_KERNEL, "TO%d.%d", (rev >> 4) & 0xf,
+ rev & 0xf);
+ else
+ return kasprintf(GFP_KERNEL, "%s", "Unknown");
}
static void __init mxs_machine_init(void)
{
+ struct device_node *root;
+ struct device *parent;
+ struct soc_device *soc_dev;
+ struct soc_device_attribute *soc_dev_attr;
+ int ret;
+
+ soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
+ if (!soc_dev_attr)
+ return;
+
+ root = of_find_node_by_path("/");
+ ret = of_property_read_string(root, "model", &soc_dev_attr->machine);
+ if (ret)
+ return;
+
+ soc_dev_attr->family = "Freescale MXS Family";
+ soc_dev_attr->soc_id = mxs_get_soc_id();
+ soc_dev_attr->revision = mxs_get_revision();
+
+ soc_dev = soc_device_register(soc_dev_attr);
+ if (IS_ERR(soc_dev)) {
+ kfree(soc_dev_attr->revision);
+ kfree(soc_dev_attr);
+ return;
+ }
+
+ parent = soc_device_to_device(soc_dev);
+
if (of_machine_is_compatible("fsl,imx28-evk"))
imx28_evk_init();
else if (of_machine_is_compatible("bluegiga,apx4devkit"))
apx4devkit_init();
- else if (of_machine_is_compatible("crystalfontz,cfa10037"))
- cfa10037_init();
- else if (of_machine_is_compatible("crystalfontz,cfa10049"))
- cfa10049_init();
+ else if (of_machine_is_compatible("crystalfontz,cfa10037") ||
+ of_machine_is_compatible("crystalfontz,cfa10049") ||
+ of_machine_is_compatible("crystalfontz,cfa10055") ||
+ of_machine_is_compatible("crystalfontz,cfa10057"))
+ crystalfontz_init();
of_platform_populate(NULL, of_default_bus_match_table,
- mxs_auxdata_lookup, NULL);
+ mxs_auxdata_lookup, parent);
if (of_machine_is_compatible("karo,tx28"))
tx28_post_init();
@@ -434,7 +544,6 @@ static const char *mxs_dt_compat[] __initdata = {
};
DT_MACHINE_START(MXS, "Freescale MXS (Device Tree)")
- .init_irq = irqchip_init,
.handle_irq = icoll_handle_irq,
.init_time = mxs_timer_init,
.init_machine = mxs_machine_init,