86 lines
2.9 KiB
Diff
86 lines
2.9 KiB
Diff
From f92d9597f781f6a5a39c73dc71604bd8a21c5299 Mon Sep 17 00:00:00 2001
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From: Rajendra Nayak <rnayak@ti.com>
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Date: Wed, 09 Oct 2013 07:26:55 +0000
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Subject: ARM: OMAP2+: hwmod: Extract no-idle and no-reset info from DT
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Now that we have DT bindings to specify which devices should not
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be reset and idled during init, make hwmod extract the information
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(and store them in internal flags) from Device tree.
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Signed-off-by: Rajendra Nayak <rnayak@ti.com>
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[paul@pwsan.com: updated to apply]
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Signed-off-by: Paul Walmsley <paul@pwsan.com>
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---
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--- a/arch/arm/mach-omap2/omap_hwmod.c
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+++ b/arch/arm/mach-omap2/omap_hwmod.c
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@@ -2393,6 +2393,8 @@ static struct device_node *of_dev_hwmod_
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/**
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* _init_mpu_rt_base - populate the virtual address for a hwmod
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* @oh: struct omap_hwmod * to locate the virtual address
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+ * @data: (unused, caller should pass NULL)
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+ * @np: struct device_node * of the IP block's device node in the DT data
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*
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* Cache the virtual address used by the MPU to access this IP block's
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* registers. This address is needed early so the OCP registers that
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@@ -2401,11 +2403,11 @@ static struct device_node *of_dev_hwmod_
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* Returns 0 on success, -EINVAL if an invalid hwmod is passed, and
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* -ENXIO on absent or invalid register target address space.
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*/
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-static int __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data)
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+static int __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data,
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+ struct device_node *np)
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{
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struct omap_hwmod_addr_space *mem;
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void __iomem *va_start = NULL;
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- struct device_node *np;
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if (!oh)
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return -EINVAL;
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@@ -2421,12 +2423,10 @@ static int __init _init_mpu_rt_base(stru
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oh->name);
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/* Extract the IO space from device tree blob */
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- if (!of_have_populated_dt())
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+ if (!np)
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return -ENXIO;
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- np = of_dev_hwmod_lookup(of_find_node_by_name(NULL, "ocp"), oh);
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- if (np)
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- va_start = of_iomap(np, oh->mpu_rt_idx);
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+ va_start = of_iomap(np, oh->mpu_rt_idx);
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} else {
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va_start = ioremap(mem->pa_start, mem->pa_end - mem->pa_start);
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}
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@@ -2459,12 +2459,16 @@ static int __init _init_mpu_rt_base(stru
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static int __init _init(struct omap_hwmod *oh, void *data)
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{
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int r;
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+ struct device_node *np = NULL;
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if (oh->_state != _HWMOD_STATE_REGISTERED)
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return 0;
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+ if (of_have_populated_dt())
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+ np = of_dev_hwmod_lookup(of_find_node_by_name(NULL, "ocp"), oh);
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+
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if (oh->class->sysc) {
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- r = _init_mpu_rt_base(oh, NULL);
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+ r = _init_mpu_rt_base(oh, NULL, np);
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if (r < 0) {
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WARN(1, "omap_hwmod: %s: doesn't have mpu register target base\n",
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oh->name);
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@@ -2478,6 +2482,12 @@ static int __init _init(struct omap_hwmo
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return -EINVAL;
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}
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+ if (np)
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+ if (of_find_property(np, "ti,no-reset-on-init", NULL))
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+ oh->flags |= HWMOD_INIT_NO_RESET;
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+ if (of_find_property(np, "ti,no-idle-on-init", NULL))
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+ oh->flags |= HWMOD_INIT_NO_IDLE;
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+
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oh->_state = _HWMOD_STATE_INITIALIZED;
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return 0;
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