On Fri, 19 Feb 2016, Keerthy wrote:

The patch adds rtc hwmod. RTC module The RTC module is physically
present on the AM438x SoC used on AM43X-EPOS-EVM, but it is permanently
disabled. A secure RTC is used instead on these devices, where needed.
. Hence adding it selectively using a seprate list to get RTC Module
functional on the other am43x SoCs used on am437x-gp-evm and
am437x-sk-evm.

Signed-off-by: Keerthy <j-keerthy@ti.com>
---

Changes in v2:

Inverted the checking logic to accommodate registering for all
the SoCs compatible to am4372 and removed the negating am438x logic
to register rtc hwmods as suggested by Paul.

 arch/arm/mach-omap2/omap_hwmod_43xx_data.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

OK thanks; I've queued the following patch for v4.6 or if I get unlucky, 
v4.7.

- Paul

From: Keerthy <j-keerthy@ti.com>
Date: Fri, 19 Feb 2016 10:08:55 +0530
Subject: [PATCH] ARM: AM43XX: hwmod: Add rtc hwmod

The patch registers the rtc hwmod on AM437x chips.  The RTC module is
physically present on the AM438x SoC used on AM43X-EPOS-EVM, but it is
permanently disabled. A secure RTC is used instead on these devices,
where needed. Hence adding it selectively using a separate list to get
RTC Module functional on the other am43x SoCs used on am437x-gp-evm
and am437x-sk-evm.

Signed-off-by: Keerthy <j-keerthy@ti.com>
[paul@pwsan.com: cleaned up patch description]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
---
 arch/arm/mach-omap2/omap_hwmod_43xx_data.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-omap2/omap_hwmod_43xx_data.c b/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
index e97a894b5f88..97fd399202dc 100644
--- a/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_43xx_data.c

@@ -1020,9 +1020,21 @@ static struct omap_hwmod_ocp_if *am43xx_hwmod_ocp_ifs[] __initdata = {
 	NULL,
 };
 
+static struct omap_hwmod_ocp_if *am43xx_rtc_hwmod_ocp_ifs[] __initdata = {
+	&am33xx_l4_wkup__rtc,
+	NULL,
+};
+
 int __init am43xx_hwmod_init(void)
 {
+	int ret;
+
 	omap_hwmod_am43xx_reg();
 	omap_hwmod_init();
-	return omap_hwmod_register_links(am43xx_hwmod_ocp_ifs);
+	ret = omap_hwmod_register_links(am43xx_hwmod_ocp_ifs);
+
+	if (!ret && of_machine_is_compatible("ti,am4372"))
+		ret = omap_hwmod_register_links(am43xx_rtc_hwmod_ocp_ifs);
+
+	return ret;
 }

-- 
2.7.0