summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorPaul Walmsley <paul@pwsan.com>2012-09-23 17:28:25 -0600
committerPaul Walmsley <paul@pwsan.com>2012-09-23 17:28:25 -0600
commite9b0a2fb0af562092aab1b56abf9d13f1abc7381 (patch)
tree788f8f4ade57572f43208d695e6d5a9657d847ec
parentda496873970c57c4b31e186d967933da0ffa0d7c (diff)
ARM: OMAP2xxx: hwmod/CM: add RNG integration data
Add integration data for the hardware random number generator IP block on some OMAP SoCs. This appears to be present on at least OMAP2xxx and OMAP3xxx SoCs, although it is not so easy to tell. It may also be present on other OMAP2+ SoCs. Signed-off-by: Paul Walmsley <paul@pwsan.com>
-rw-r--r--arch/arm/mach-omap2/cm2xxx_3xxx.c2
-rw-r--r--arch/arm/mach-omap2/cm2xxx_3xxx.h1
-rw-r--r--arch/arm/mach-omap2/omap_hwmod_2420_data.c1
-rw-r--r--arch/arm/mach-omap2/omap_hwmod_2430_data.c1
-rw-r--r--arch/arm/mach-omap2/omap_hwmod_2xxx_interconnect_data.c17
-rw-r--r--arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c44
-rw-r--r--arch/arm/mach-omap2/omap_hwmod_common_data.h5
7 files changed, 68 insertions, 3 deletions
diff --git a/arch/arm/mach-omap2/cm2xxx_3xxx.c b/arch/arm/mach-omap2/cm2xxx_3xxx.c
index a911e76b4ecf..7f07ab02a5b3 100644
--- a/arch/arm/mach-omap2/cm2xxx_3xxx.c
+++ b/arch/arm/mach-omap2/cm2xxx_3xxx.c
@@ -35,7 +35,7 @@
#define OMAP2XXX_APLL_AUTOIDLE_LOW_POWER_STOP 0x3
static const u8 cm_idlest_offs[] = {
- CM_IDLEST1, CM_IDLEST2, OMAP2430_CM_IDLEST3
+ CM_IDLEST1, CM_IDLEST2, OMAP2430_CM_IDLEST3, OMAP24XX_CM_IDLEST4
};
u32 omap2_cm_read_mod_reg(s16 module, u16 idx)
diff --git a/arch/arm/mach-omap2/cm2xxx_3xxx.h b/arch/arm/mach-omap2/cm2xxx_3xxx.h
index 088bbad73db5..57b2f3c2fbf3 100644
--- a/arch/arm/mach-omap2/cm2xxx_3xxx.h
+++ b/arch/arm/mach-omap2/cm2xxx_3xxx.h
@@ -71,6 +71,7 @@
#define OMAP24XX_CM_FCLKEN2 0x0004
#define OMAP24XX_CM_ICLKEN4 0x001c
#define OMAP24XX_CM_AUTOIDLE4 0x003c
+#define OMAP24XX_CM_IDLEST4 0x002c
#define OMAP2430_CM_IDLEST3 0x0028
diff --git a/arch/arm/mach-omap2/omap_hwmod_2420_data.c b/arch/arm/mach-omap2/omap_hwmod_2420_data.c
index 5fcd225d207e..e778ff4e1887 100644
--- a/arch/arm/mach-omap2/omap_hwmod_2420_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_2420_data.c
@@ -601,6 +601,7 @@ static struct omap_hwmod_ocp_if *omap2420_hwmod_ocp_ifs[] __initdata = {
&omap2420_l4_core__mcbsp1,
&omap2420_l4_core__mcbsp2,
&omap2420_l4_core__msdi1,
+ &omap2xxx_l4_core__rng,
&omap2420_l4_core__hdq1w,
&omap2420_l4_wkup__counter_32k,
&omap2420_l3__gpmc,
diff --git a/arch/arm/mach-omap2/omap_hwmod_2430_data.c b/arch/arm/mach-omap2/omap_hwmod_2430_data.c
index a560563daf58..cc4ed9024372 100644
--- a/arch/arm/mach-omap2/omap_hwmod_2430_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_2430_data.c
@@ -961,6 +961,7 @@ static struct omap_hwmod_ocp_if *omap2430_hwmod_ocp_ifs[] __initdata = {
&omap2430_l4_core__mcbsp4,
&omap2430_l4_core__mcbsp5,
&omap2430_l4_core__hdq1w,
+ &omap2xxx_l4_core__rng,
&omap2430_l4_wkup__counter_32k,
&omap2430_l3__gpmc,
NULL,
diff --git a/arch/arm/mach-omap2/omap_hwmod_2xxx_interconnect_data.c b/arch/arm/mach-omap2/omap_hwmod_2xxx_interconnect_data.c
index 5178e40e84f9..c83d6c517be4 100644
--- a/arch/arm/mach-omap2/omap_hwmod_2xxx_interconnect_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_2xxx_interconnect_data.c
@@ -129,6 +129,15 @@ struct omap_hwmod_addr_space omap2xxx_mcbsp2_addrs[] = {
{ }
};
+static struct omap_hwmod_addr_space omap2_rng_addr_space[] = {
+ {
+ .pa_start = 0x480a0000,
+ .pa_end = 0x480a004f,
+ .flags = ADDR_TYPE_RT
+ },
+ { }
+};
+
/*
* Common interconnect data
*/
@@ -372,3 +381,11 @@ struct omap_hwmod_ocp_if omap2xxx_l4_core__dss_venc = {
.user = OCP_USER_MPU | OCP_USER_SDMA,
};
+/* l4_core -> rng */
+struct omap_hwmod_ocp_if omap2xxx_l4_core__rng = {
+ .master = &omap2xxx_l4_core_hwmod,
+ .slave = &omap2xxx_rng_hwmod,
+ .clk = "rng_ick",
+ .addr = omap2_rng_addr_space,
+ .user = OCP_USER_MPU | OCP_USER_SDMA,
+};
diff --git a/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c b/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c
index 3c009069f2f2..32c778bf8f08 100644
--- a/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_2xxx_ipblock_data.c
@@ -792,3 +792,47 @@ struct omap_hwmod omap2xxx_gpmc_hwmod = {
},
},
};
+
+/* RNG */
+
+static struct omap_hwmod_class_sysconfig omap2_rng_sysc = {
+ .rev_offs = 0x3c,
+ .sysc_offs = 0x40,
+ .syss_offs = 0x44,
+ .sysc_flags = (SYSC_HAS_SOFTRESET | SYSC_HAS_AUTOIDLE |
+ SYSS_HAS_RESET_STATUS),
+ .sysc_fields = &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap2_rng_hwmod_class = {
+ .name = "rng",
+ .sysc = &omap2_rng_sysc,
+};
+
+static struct omap_hwmod_irq_info omap2_rng_mpu_irqs[] = {
+ { .irq = 52 },
+ { .irq = -1 }
+};
+
+struct omap_hwmod omap2xxx_rng_hwmod = {
+ .name = "rng",
+ .mpu_irqs = omap2_rng_mpu_irqs,
+ .main_clk = "l4_ck",
+ .prcm = {
+ .omap2 = {
+ .module_offs = CORE_MOD,
+ .prcm_reg_id = 4,
+ .module_bit = OMAP24XX_EN_RNG_SHIFT,
+ .idlest_reg_id = 4,
+ .idlest_idle_bit = OMAP24XX_ST_RNG_SHIFT,
+ },
+ },
+ /*
+ * XXX The first read from the SYSSTATUS register of the RNG
+ * after the SYSCONFIG SOFTRESET bit is set triggers an
+ * imprecise external abort. It's unclear why this happens.
+ * Until this is analyzed, skip the IP block reset.
+ */
+ .flags = HWMOD_INIT_NO_RESET,
+ .class = &omap2_rng_hwmod_class,
+};
diff --git a/arch/arm/mach-omap2/omap_hwmod_common_data.h b/arch/arm/mach-omap2/omap_hwmod_common_data.h
index 6a033b878359..2bc8f1705d4a 100644
--- a/arch/arm/mach-omap2/omap_hwmod_common_data.h
+++ b/arch/arm/mach-omap2/omap_hwmod_common_data.h
@@ -2,9 +2,8 @@
* omap_hwmod_common_data.h - OMAP hwmod common macros and declarations
*
* Copyright (C) 2010-2011 Nokia Corporation
+ * Copyright (C) 2010-2012 Texas Instruments, Inc.
* Paul Walmsley
- *
- * Copyright (C) 2010-2011 Texas Instruments, Inc.
* BenoƮt Cousson
*
* This program is free software; you can redistribute it and/or modify
@@ -78,6 +77,7 @@ extern struct omap_hwmod omap2xxx_mcspi1_hwmod;
extern struct omap_hwmod omap2xxx_mcspi2_hwmod;
extern struct omap_hwmod omap2xxx_counter_32k_hwmod;
extern struct omap_hwmod omap2xxx_gpmc_hwmod;
+extern struct omap_hwmod omap2xxx_rng_hwmod;
/* Common interface data across OMAP2xxx */
extern struct omap_hwmod_ocp_if omap2xxx_l3_main__l4_core;
@@ -104,6 +104,7 @@ extern struct omap_hwmod_ocp_if omap2xxx_l4_core__dss;
extern struct omap_hwmod_ocp_if omap2xxx_l4_core__dss_dispc;
extern struct omap_hwmod_ocp_if omap2xxx_l4_core__dss_rfbi;
extern struct omap_hwmod_ocp_if omap2xxx_l4_core__dss_venc;
+extern struct omap_hwmod_ocp_if omap2xxx_l4_core__rng;
/* Common IP block data */
extern struct omap_hwmod_dma_info omap2_uart1_sdma_reqs[];