--- /dev/null
- struct irq_desc *iomuxc_irq_desc;
+ /*
+ * Copyright 2011-2014 Freescale Semiconductor, Inc.
+ * Copyright 2011 Linaro Ltd.
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+ #include <linux/delay.h>
+ #include <linux/init.h>
+ #include <linux/io.h>
+ #include <linux/irq.h>
+ #include <linux/genalloc.h>
+ #include <linux/mfd/syscon.h>
+ #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h>
+ #include <linux/of.h>
+ #include <linux/of_address.h>
+ #include <linux/of_platform.h>
+ #include <linux/regmap.h>
+ #include <linux/suspend.h>
+ #include <asm/cacheflush.h>
+ #include <asm/fncpy.h>
+ #include <asm/proc-fns.h>
+ #include <asm/suspend.h>
+ #include <asm/tlb.h>
+
+ #include "common.h"
+ #include "hardware.h"
+
+ #define CCR 0x0
+ #define BM_CCR_WB_COUNT (0x7 << 16)
+ #define BM_CCR_RBC_BYPASS_COUNT (0x3f << 21)
+ #define BM_CCR_RBC_EN (0x1 << 27)
+
+ #define CLPCR 0x54
+ #define BP_CLPCR_LPM 0
+ #define BM_CLPCR_LPM (0x3 << 0)
+ #define BM_CLPCR_BYPASS_PMIC_READY (0x1 << 2)
+ #define BM_CLPCR_ARM_CLK_DIS_ON_LPM (0x1 << 5)
+ #define BM_CLPCR_SBYOS (0x1 << 6)
+ #define BM_CLPCR_DIS_REF_OSC (0x1 << 7)
+ #define BM_CLPCR_VSTBY (0x1 << 8)
+ #define BP_CLPCR_STBY_COUNT 9
+ #define BM_CLPCR_STBY_COUNT (0x3 << 9)
+ #define BM_CLPCR_COSC_PWRDOWN (0x1 << 11)
+ #define BM_CLPCR_WB_PER_AT_LPM (0x1 << 16)
+ #define BM_CLPCR_WB_CORE_AT_LPM (0x1 << 17)
+ #define BM_CLPCR_BYP_MMDC_CH0_LPM_HS (0x1 << 19)
+ #define BM_CLPCR_BYP_MMDC_CH1_LPM_HS (0x1 << 21)
+ #define BM_CLPCR_MASK_CORE0_WFI (0x1 << 22)
+ #define BM_CLPCR_MASK_CORE1_WFI (0x1 << 23)
+ #define BM_CLPCR_MASK_CORE2_WFI (0x1 << 24)
+ #define BM_CLPCR_MASK_CORE3_WFI (0x1 << 25)
+ #define BM_CLPCR_MASK_SCU_IDLE (0x1 << 26)
+ #define BM_CLPCR_MASK_L2CC_IDLE (0x1 << 27)
+
+ #define CGPR 0x64
+ #define BM_CGPR_INT_MEM_CLK_LPM (0x1 << 17)
+
+ #define MX6Q_SUSPEND_OCRAM_SIZE 0x1000
+ #define MX6_MAX_MMDC_IO_NUM 33
+
+ static void __iomem *ccm_base;
+ static void __iomem *suspend_ocram_base;
+ static void (*imx6_suspend_in_ocram_fn)(void __iomem *ocram_vbase);
+
+ /*
+ * suspend ocram space layout:
+ * ======================== high address ======================
+ * .
+ * .
+ * .
+ * ^
+ * ^
+ * ^
+ * imx6_suspend code
+ * PM_INFO structure(imx6_cpu_pm_info)
+ * ======================== low address =======================
+ */
+
+ struct imx6_pm_base {
+ phys_addr_t pbase;
+ void __iomem *vbase;
+ };
+
+ struct imx6_pm_socdata {
+ u32 cpu_type;
+ const char *mmdc_compat;
+ const char *src_compat;
+ const char *iomuxc_compat;
+ const char *gpc_compat;
+ const u32 mmdc_io_num;
+ const u32 *mmdc_io_offset;
+ };
+
+ static const u32 imx6q_mmdc_io_offset[] __initconst = {
+ 0x5ac, 0x5b4, 0x528, 0x520, /* DQM0 ~ DQM3 */
+ 0x514, 0x510, 0x5bc, 0x5c4, /* DQM4 ~ DQM7 */
+ 0x56c, 0x578, 0x588, 0x594, /* CAS, RAS, SDCLK_0, SDCLK_1 */
+ 0x5a8, 0x5b0, 0x524, 0x51c, /* SDQS0 ~ SDQS3 */
+ 0x518, 0x50c, 0x5b8, 0x5c0, /* SDQS4 ~ SDQS7 */
+ 0x784, 0x788, 0x794, 0x79c, /* GPR_B0DS ~ GPR_B3DS */
+ 0x7a0, 0x7a4, 0x7a8, 0x748, /* GPR_B4DS ~ GPR_B7DS */
+ 0x59c, 0x5a0, 0x750, 0x774, /* SODT0, SODT1, MODE_CTL, MODE */
+ 0x74c, /* GPR_ADDS */
+ };
+
+ static const u32 imx6dl_mmdc_io_offset[] __initconst = {
+ 0x470, 0x474, 0x478, 0x47c, /* DQM0 ~ DQM3 */
+ 0x480, 0x484, 0x488, 0x48c, /* DQM4 ~ DQM7 */
+ 0x464, 0x490, 0x4ac, 0x4b0, /* CAS, RAS, SDCLK_0, SDCLK_1 */
+ 0x4bc, 0x4c0, 0x4c4, 0x4c8, /* DRAM_SDQS0 ~ DRAM_SDQS3 */
+ 0x4cc, 0x4d0, 0x4d4, 0x4d8, /* DRAM_SDQS4 ~ DRAM_SDQS7 */
+ 0x764, 0x770, 0x778, 0x77c, /* GPR_B0DS ~ GPR_B3DS */
+ 0x780, 0x784, 0x78c, 0x748, /* GPR_B4DS ~ GPR_B7DS */
+ 0x4b4, 0x4b8, 0x750, 0x760, /* SODT0, SODT1, MODE_CTL, MODE */
+ 0x74c, /* GPR_ADDS */
+ };
+
+ static const u32 imx6sl_mmdc_io_offset[] __initconst = {
+ 0x30c, 0x310, 0x314, 0x318, /* DQM0 ~ DQM3 */
+ 0x5c4, 0x5cc, 0x5d4, 0x5d8, /* GPR_B0DS ~ GPR_B3DS */
+ 0x300, 0x31c, 0x338, 0x5ac, /* CAS, RAS, SDCLK_0, GPR_ADDS */
+ 0x33c, 0x340, 0x5b0, 0x5c0, /* SODT0, SODT1, MODE_CTL, MODE */
+ 0x330, 0x334, 0x320, /* SDCKE0, SDCKE1, RESET */
+ };
+
+ static const struct imx6_pm_socdata imx6q_pm_data __initconst = {
+ .cpu_type = MXC_CPU_IMX6Q,
+ .mmdc_compat = "fsl,imx6q-mmdc",
+ .src_compat = "fsl,imx6q-src",
+ .iomuxc_compat = "fsl,imx6q-iomuxc",
+ .gpc_compat = "fsl,imx6q-gpc",
+ .mmdc_io_num = ARRAY_SIZE(imx6q_mmdc_io_offset),
+ .mmdc_io_offset = imx6q_mmdc_io_offset,
+ };
+
+ static const struct imx6_pm_socdata imx6dl_pm_data __initconst = {
+ .cpu_type = MXC_CPU_IMX6DL,
+ .mmdc_compat = "fsl,imx6q-mmdc",
+ .src_compat = "fsl,imx6q-src",
+ .iomuxc_compat = "fsl,imx6dl-iomuxc",
+ .gpc_compat = "fsl,imx6q-gpc",
+ .mmdc_io_num = ARRAY_SIZE(imx6dl_mmdc_io_offset),
+ .mmdc_io_offset = imx6dl_mmdc_io_offset,
+ };
+
+ static const struct imx6_pm_socdata imx6sl_pm_data __initconst = {
+ .cpu_type = MXC_CPU_IMX6SL,
+ .mmdc_compat = "fsl,imx6sl-mmdc",
+ .src_compat = "fsl,imx6sl-src",
+ .iomuxc_compat = "fsl,imx6sl-iomuxc",
+ .gpc_compat = "fsl,imx6sl-gpc",
+ .mmdc_io_num = ARRAY_SIZE(imx6sl_mmdc_io_offset),
+ .mmdc_io_offset = imx6sl_mmdc_io_offset,
+ };
+
+ /*
+ * This structure is for passing necessary data for low level ocram
+ * suspend code(arch/arm/mach-imx/suspend-imx6.S), if this struct
+ * definition is changed, the offset definition in
+ * arch/arm/mach-imx/suspend-imx6.S must be also changed accordingly,
+ * otherwise, the suspend to ocram function will be broken!
+ */
+ struct imx6_cpu_pm_info {
+ phys_addr_t pbase; /* The physical address of pm_info. */
+ phys_addr_t resume_addr; /* The physical resume address for asm code */
+ u32 cpu_type;
+ u32 pm_info_size; /* Size of pm_info. */
+ struct imx6_pm_base mmdc_base;
+ struct imx6_pm_base src_base;
+ struct imx6_pm_base iomuxc_base;
+ struct imx6_pm_base ccm_base;
+ struct imx6_pm_base gpc_base;
+ struct imx6_pm_base l2_base;
+ u32 mmdc_io_num; /* Number of MMDC IOs which need saved/restored. */
+ u32 mmdc_io_val[MX6_MAX_MMDC_IO_NUM][2]; /* To save offset and value */
+ } __aligned(8);
+
+ void imx6q_set_int_mem_clk_lpm(void)
+ {
+ u32 val = readl_relaxed(ccm_base + CGPR);
+
+ val |= BM_CGPR_INT_MEM_CLK_LPM;
+ writel_relaxed(val, ccm_base + CGPR);
+ }
+
+ static void imx6q_enable_rbc(bool enable)
+ {
+ u32 val;
+
+ /*
+ * need to mask all interrupts in GPC before
+ * operating RBC configurations
+ */
+ imx_gpc_mask_all();
+
+ /* configure RBC enable bit */
+ val = readl_relaxed(ccm_base + CCR);
+ val &= ~BM_CCR_RBC_EN;
+ val |= enable ? BM_CCR_RBC_EN : 0;
+ writel_relaxed(val, ccm_base + CCR);
+
+ /* configure RBC count */
+ val = readl_relaxed(ccm_base + CCR);
+ val &= ~BM_CCR_RBC_BYPASS_COUNT;
+ val |= enable ? BM_CCR_RBC_BYPASS_COUNT : 0;
+ writel(val, ccm_base + CCR);
+
+ /*
+ * need to delay at least 2 cycles of CKIL(32K)
+ * due to hardware design requirement, which is
+ * ~61us, here we use 65us for safe
+ */
+ udelay(65);
+
+ /* restore GPC interrupt mask settings */
+ imx_gpc_restore_all();
+ }
+
+ static void imx6q_enable_wb(bool enable)
+ {
+ u32 val;
+
+ /* configure well bias enable bit */
+ val = readl_relaxed(ccm_base + CLPCR);
+ val &= ~BM_CLPCR_WB_PER_AT_LPM;
+ val |= enable ? BM_CLPCR_WB_PER_AT_LPM : 0;
+ writel_relaxed(val, ccm_base + CLPCR);
+
+ /* configure well bias count */
+ val = readl_relaxed(ccm_base + CCR);
+ val &= ~BM_CCR_WB_COUNT;
+ val |= enable ? BM_CCR_WB_COUNT : 0;
+ writel_relaxed(val, ccm_base + CCR);
+ }
+
+ int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode)
+ {
- iomuxc_irq_desc = irq_to_desc(32);
- imx_gpc_irq_unmask(&iomuxc_irq_desc->irq_data);
++ struct irq_data *iomuxc_irq_data = irq_get_irq_data(32);
+ u32 val = readl_relaxed(ccm_base + CLPCR);
+
+ val &= ~BM_CLPCR_LPM;
+ switch (mode) {
+ case WAIT_CLOCKED:
+ break;
+ case WAIT_UNCLOCKED:
+ val |= 0x1 << BP_CLPCR_LPM;
+ val |= BM_CLPCR_ARM_CLK_DIS_ON_LPM;
+ break;
+ case STOP_POWER_ON:
+ val |= 0x2 << BP_CLPCR_LPM;
+ break;
+ case WAIT_UNCLOCKED_POWER_OFF:
+ val |= 0x1 << BP_CLPCR_LPM;
+ val &= ~BM_CLPCR_VSTBY;
+ val &= ~BM_CLPCR_SBYOS;
+ break;
+ case STOP_POWER_OFF:
+ val |= 0x2 << BP_CLPCR_LPM;
+ val |= 0x3 << BP_CLPCR_STBY_COUNT;
+ val |= BM_CLPCR_VSTBY;
+ val |= BM_CLPCR_SBYOS;
+ if (cpu_is_imx6sl()) {
+ val |= BM_CLPCR_BYPASS_PMIC_READY;
+ val |= BM_CLPCR_BYP_MMDC_CH0_LPM_HS;
+ } else {
+ val |= BM_CLPCR_BYP_MMDC_CH1_LPM_HS;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /*
+ * ERR007265: CCM: When improper low-power sequence is used,
+ * the SoC enters low power mode before the ARM core executes WFI.
+ *
+ * Software workaround:
+ * 1) Software should trigger IRQ #32 (IOMUX) to be always pending
+ * by setting IOMUX_GPR1_GINT.
+ * 2) Software should then unmask IRQ #32 in GPC before setting CCM
+ * Low-Power mode.
+ * 3) Software should mask IRQ #32 right after CCM Low-Power mode
+ * is set (set bits 0-1 of CCM_CLPCR).
+ */
- imx_gpc_irq_mask(&iomuxc_irq_desc->irq_data);
++ imx_gpc_irq_unmask(iomuxc_irq_data);
+ writel_relaxed(val, ccm_base + CLPCR);
++ imx_gpc_irq_mask(iomuxc_irq_data);
+
+ return 0;
+ }
+
+ static int imx6q_suspend_finish(unsigned long val)
+ {
+ if (!imx6_suspend_in_ocram_fn) {
+ cpu_do_idle();
+ } else {
+ /*
+ * call low level suspend function in ocram,
+ * as we need to float DDR IO.
+ */
+ local_flush_tlb_all();
+ imx6_suspend_in_ocram_fn(suspend_ocram_base);
+ }
+
+ return 0;
+ }
+
+ static int imx6q_pm_enter(suspend_state_t state)
+ {
+ switch (state) {
+ case PM_SUSPEND_MEM:
+ imx6q_set_lpm(STOP_POWER_OFF);
+ imx6q_enable_wb(true);
+ /*
+ * For suspend into ocram, asm code already take care of
+ * RBC setting, so we do NOT need to do that here.
+ */
+ if (!imx6_suspend_in_ocram_fn)
+ imx6q_enable_rbc(true);
+ imx_gpc_pre_suspend();
+ imx_anatop_pre_suspend();
+ imx_set_cpu_jump(0, v7_cpu_resume);
+ /* Zzz ... */
+ cpu_suspend(0, imx6q_suspend_finish);
+ if (cpu_is_imx6q() || cpu_is_imx6dl())
+ imx_smp_prepare();
+ imx_anatop_post_resume();
+ imx_gpc_post_resume();
+ imx6q_enable_rbc(false);
+ imx6q_enable_wb(false);
+ imx6q_set_lpm(WAIT_CLOCKED);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+ }
+
+ static const struct platform_suspend_ops imx6q_pm_ops = {
+ .enter = imx6q_pm_enter,
+ .valid = suspend_valid_only_mem,
+ };
+
+ void __init imx6q_pm_set_ccm_base(void __iomem *base)
+ {
+ ccm_base = base;
+ }
+
+ static int __init imx6_pm_get_base(struct imx6_pm_base *base,
+ const char *compat)
+ {
+ struct device_node *node;
+ struct resource res;
+ int ret = 0;
+
+ node = of_find_compatible_node(NULL, NULL, compat);
+ if (!node) {
+ ret = -ENODEV;
+ goto out;
+ }
+
+ ret = of_address_to_resource(node, 0, &res);
+ if (ret)
+ goto put_node;
+
+ base->pbase = res.start;
+ base->vbase = ioremap(res.start, resource_size(&res));
+ if (!base->vbase)
+ ret = -ENOMEM;
+
+ put_node:
+ of_node_put(node);
+ out:
+ return ret;
+ }
+
+ static int __init imx6q_suspend_init(const struct imx6_pm_socdata *socdata)
+ {
+ phys_addr_t ocram_pbase;
+ struct device_node *node;
+ struct platform_device *pdev;
+ struct imx6_cpu_pm_info *pm_info;
+ struct gen_pool *ocram_pool;
+ unsigned long ocram_base;
+ int i, ret = 0;
+ const u32 *mmdc_offset_array;
+
+ suspend_set_ops(&imx6q_pm_ops);
+
+ if (!socdata) {
+ pr_warn("%s: invalid argument!\n", __func__);
+ return -EINVAL;
+ }
+
+ node = of_find_compatible_node(NULL, NULL, "mmio-sram");
+ if (!node) {
+ pr_warn("%s: failed to find ocram node!\n", __func__);
+ return -ENODEV;
+ }
+
+ pdev = of_find_device_by_node(node);
+ if (!pdev) {
+ pr_warn("%s: failed to find ocram device!\n", __func__);
+ ret = -ENODEV;
+ goto put_node;
+ }
+
+ ocram_pool = dev_get_gen_pool(&pdev->dev);
+ if (!ocram_pool) {
+ pr_warn("%s: ocram pool unavailable!\n", __func__);
+ ret = -ENODEV;
+ goto put_node;
+ }
+
+ ocram_base = gen_pool_alloc(ocram_pool, MX6Q_SUSPEND_OCRAM_SIZE);
+ if (!ocram_base) {
+ pr_warn("%s: unable to alloc ocram!\n", __func__);
+ ret = -ENOMEM;
+ goto put_node;
+ }
+
+ ocram_pbase = gen_pool_virt_to_phys(ocram_pool, ocram_base);
+
+ suspend_ocram_base = __arm_ioremap_exec(ocram_pbase,
+ MX6Q_SUSPEND_OCRAM_SIZE, false);
+
+ pm_info = suspend_ocram_base;
+ pm_info->pbase = ocram_pbase;
+ pm_info->resume_addr = virt_to_phys(v7_cpu_resume);
+ pm_info->pm_info_size = sizeof(*pm_info);
+
+ /*
+ * ccm physical address is not used by asm code currently,
+ * so get ccm virtual address directly, as we already have
+ * it from ccm driver.
+ */
+ pm_info->ccm_base.vbase = ccm_base;
+
+ ret = imx6_pm_get_base(&pm_info->mmdc_base, socdata->mmdc_compat);
+ if (ret) {
+ pr_warn("%s: failed to get mmdc base %d!\n", __func__, ret);
+ goto put_node;
+ }
+
+ ret = imx6_pm_get_base(&pm_info->src_base, socdata->src_compat);
+ if (ret) {
+ pr_warn("%s: failed to get src base %d!\n", __func__, ret);
+ goto src_map_failed;
+ }
+
+ ret = imx6_pm_get_base(&pm_info->iomuxc_base, socdata->iomuxc_compat);
+ if (ret) {
+ pr_warn("%s: failed to get iomuxc base %d!\n", __func__, ret);
+ goto iomuxc_map_failed;
+ }
+
+ ret = imx6_pm_get_base(&pm_info->gpc_base, socdata->gpc_compat);
+ if (ret) {
+ pr_warn("%s: failed to get gpc base %d!\n", __func__, ret);
+ goto gpc_map_failed;
+ }
+
+ ret = imx6_pm_get_base(&pm_info->l2_base, "arm,pl310-cache");
+ if (ret) {
+ pr_warn("%s: failed to get pl310-cache base %d!\n",
+ __func__, ret);
+ goto pl310_cache_map_failed;
+ }
+
+ pm_info->cpu_type = socdata->cpu_type;
+ pm_info->mmdc_io_num = socdata->mmdc_io_num;
+ mmdc_offset_array = socdata->mmdc_io_offset;
+
+ for (i = 0; i < pm_info->mmdc_io_num; i++) {
+ pm_info->mmdc_io_val[i][0] =
+ mmdc_offset_array[i];
+ pm_info->mmdc_io_val[i][1] =
+ readl_relaxed(pm_info->iomuxc_base.vbase +
+ mmdc_offset_array[i]);
+ }
+
+ imx6_suspend_in_ocram_fn = fncpy(
+ suspend_ocram_base + sizeof(*pm_info),
+ &imx6_suspend,
+ MX6Q_SUSPEND_OCRAM_SIZE - sizeof(*pm_info));
+
+ goto put_node;
+
+ pl310_cache_map_failed:
+ iounmap(&pm_info->gpc_base.vbase);
+ gpc_map_failed:
+ iounmap(&pm_info->iomuxc_base.vbase);
+ iomuxc_map_failed:
+ iounmap(&pm_info->src_base.vbase);
+ src_map_failed:
+ iounmap(&pm_info->mmdc_base.vbase);
+ put_node:
+ of_node_put(node);
+
+ return ret;
+ }
+
+ static void __init imx6_pm_common_init(const struct imx6_pm_socdata
+ *socdata)
+ {
+ struct regmap *gpr;
+ int ret;
+
+ WARN_ON(!ccm_base);
+
+ if (IS_ENABLED(CONFIG_SUSPEND)) {
+ ret = imx6q_suspend_init(socdata);
+ if (ret)
+ pr_warn("%s: No DDR LPM support with suspend %d!\n",
+ __func__, ret);
+ }
+
+ /*
+ * This is for SW workaround step #1 of ERR007265, see comments
+ * in imx6q_set_lpm for details of this errata.
+ * Force IOMUXC irq pending, so that the interrupt to GPC can be
+ * used to deassert dsm_request signal when the signal gets
+ * asserted unexpectedly.
+ */
+ gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
+ if (!IS_ERR(gpr))
+ regmap_update_bits(gpr, IOMUXC_GPR1, IMX6Q_GPR1_GINT,
+ IMX6Q_GPR1_GINT);
+ }
+
+ void __init imx6q_pm_init(void)
+ {
+ imx6_pm_common_init(&imx6q_pm_data);
+ }
+
+ void __init imx6dl_pm_init(void)
+ {
+ imx6_pm_common_init(&imx6dl_pm_data);
+ }
+
+ void __init imx6sl_pm_init(void)
+ {
+ imx6_pm_common_init(&imx6sl_pm_data);
+ }
--- /dev/null
+ /*
+ * Device Tree support for Armada 370 and XP platforms.
+ *
+ * Copyright (C) 2012 Marvell
+ *
+ * Lior Amsalem <alior@marvell.com>
+ * Gregory CLEMENT <gregory.clement@free-electrons.com>
+ * Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+ #include <linux/kernel.h>
+ #include <linux/init.h>
+ #include <linux/clk-provider.h>
+ #include <linux/of_address.h>
+ #include <linux/of_platform.h>
+ #include <linux/io.h>
+ #include <linux/clocksource.h>
+ #include <linux/dma-mapping.h>
+ #include <linux/mbus.h>
++#include <linux/signal.h>
+ #include <linux/slab.h>
+ #include <asm/hardware/cache-l2x0.h>
+ #include <asm/mach/arch.h>
+ #include <asm/mach/map.h>
+ #include <asm/mach/time.h>
+ #include "armada-370-xp.h"
+ #include "common.h"
+ #include "coherency.h"
+ #include "mvebu-soc-id.h"
+
+ /*
+ * Early versions of Armada 375 SoC have a bug where the BootROM
+ * leaves an external data abort pending. The kernel is hit by this
+ * data abort as soon as it enters userspace, because it unmasks the
+ * data aborts at this moment. We register a custom abort handler
+ * below to ignore the first data abort to work around this
+ * problem.
+ */
+ static int armada_375_external_abort_wa(unsigned long addr, unsigned int fsr,
+ struct pt_regs *regs)
+ {
+ static int ignore_first;
+
+ if (!ignore_first && fsr == 0x1406) {
+ ignore_first = 1;
+ return 0;
+ }
+
+ return 1;
+ }
+
+ static void __init mvebu_timer_and_clk_init(void)
+ {
+ of_clk_init(NULL);
+ clocksource_of_init();
+ coherency_init();
+ BUG_ON(mvebu_mbus_dt_init());
+ #ifdef CONFIG_CACHE_L2X0
+ l2x0_of_init(0, ~0UL);
+ #endif
+
+ if (of_machine_is_compatible("marvell,armada375"))
+ hook_fault_code(16 + 6, armada_375_external_abort_wa, SIGBUS, 0,
+ "imprecise external abort");
+ }
+
+ static void __init i2c_quirk(void)
+ {
+ struct device_node *np;
+ u32 dev, rev;
+
+ /*
+ * Only revisons more recent than A0 support the offload
+ * mechanism. We can exit only if we are sure that we can
+ * get the SoC revision and it is more recent than A0.
+ */
+ if (mvebu_get_soc_id(&rev, &dev) == 0 && dev > MV78XX0_A0_REV)
+ return;
+
+ for_each_compatible_node(np, NULL, "marvell,mv78230-i2c") {
+ struct property *new_compat;
+
+ new_compat = kzalloc(sizeof(*new_compat), GFP_KERNEL);
+
+ new_compat->name = kstrdup("compatible", GFP_KERNEL);
+ new_compat->length = sizeof("marvell,mv78230-a0-i2c");
+ new_compat->value = kstrdup("marvell,mv78230-a0-i2c",
+ GFP_KERNEL);
+
+ of_update_property(np, new_compat);
+ }
+ return;
+ }
+
+ static void __init mvebu_dt_init(void)
+ {
+ if (of_machine_is_compatible("plathome,openblocks-ax3-4"))
+ i2c_quirk();
+ of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
+ }
+
+ static const char * const armada_370_xp_dt_compat[] = {
+ "marvell,armada-370-xp",
+ NULL,
+ };
+
+ DT_MACHINE_START(ARMADA_370_XP_DT, "Marvell Armada 370/XP (Device Tree)")
+ .smp = smp_ops(armada_xp_smp_ops),
+ .init_machine = mvebu_dt_init,
+ .init_time = mvebu_timer_and_clk_init,
+ .restart = mvebu_restart,
+ .dt_compat = armada_370_xp_dt_compat,
+ MACHINE_END
+
+ static const char * const armada_375_dt_compat[] = {
+ "marvell,armada375",
+ NULL,
+ };
+
+ DT_MACHINE_START(ARMADA_375_DT, "Marvell Armada 375 (Device Tree)")
+ .init_time = mvebu_timer_and_clk_init,
+ .restart = mvebu_restart,
+ .dt_compat = armada_375_dt_compat,
+ MACHINE_END
+
+ static const char * const armada_38x_dt_compat[] = {
+ "marvell,armada380",
+ "marvell,armada385",
+ NULL,
+ };
+
+ DT_MACHINE_START(ARMADA_38X_DT, "Marvell Armada 380/385 (Device Tree)")
+ .init_time = mvebu_timer_and_clk_init,
+ .restart = mvebu_restart,
+ .dt_compat = armada_38x_dt_compat,
+ MACHINE_END
projects / linux.git / commitdiff