Re: [PATCH v2 5/6] ARM: AM43XX: HWMOD: Add rtc hwmod

[Tero Kristo]

On 08/12/2015 05:39 PM, Paul Walmsley wrote:

On Mon, 10 Aug 2015, Keerthy wrote:


The patch adds rtc hwmod. This is present on gp and sk evm and not on
epos evm. Hence adding it selectively using a seprate list.

Signed-off-by: Keerthy 


So just to confirm, the RTC IP block has been physically removed or
permanently disabled on these new AM438x chips?  So the registers are no
longer accessible by the MPU?

Is there a TRM available for these chips?


No public TRM available, as the SoC mostly contains secure environment 
support on them.


The RTC module is physically present on the SoC, but it is permanently 
disabled. A secure RTC is used instead on these devices, where needed.


-Tero




- Paul
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Re: [PATCH v2 5/6] ARM: AM43XX: HWMOD: Add rtc hwmod

[Paul Walmsley]

On Mon, 10 Aug 2015, Keerthy wrote:

> The patch adds rtc hwmod. This is present on gp and sk evm and not on
> epos evm. Hence adding it selectively using a seprate list.
> 
> Signed-off-by: Keerthy 

So just to confirm, the RTC IP block has been physically removed or 
permanently disabled on these new AM438x chips?  So the registers are no 
longer accessible by the MPU?

Is there a TRM available for these chips?


- Paul
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[PATCH v2 5/6] ARM: AM43XX: HWMOD: Add rtc hwmod

[Keerthy]

The patch adds rtc hwmod. This is present on gp and sk evm and not on
epos evm. Hence adding it selectively using a seprate list.

Signed-off-by: Keerthy 
---
 arch/arm/mach-omap2/omap_hwmod_43xx_data.c | 16 ++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/arch/arm/mach-omap2/omap_hwmod_43xx_data.c 
b/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
index 215d5ef..a0850b9 100644
--- a/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
@@ -21,7 +21,7 @@
 #include "prcm43xx.h"
 #include "omap_hwmod_common_data.h"
 #include "hdq1w.h"
-
+#include "soc.h"
 
 /* IP blocks */
 static struct omap_hwmod am43xx_emif_hwmod = {
@@ -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 (!soc_is_am438x())
+   ret = omap_hwmod_register_links(am43xx_rtc_hwmod_ocp_ifs);
+
+   return ret;
 }
-- 
1.9.1

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