Re: [PATCH 6/6] tty: serial: Add 8250-core based omap driver

2014-07-10 Thread menon.nisha...@gmail.com 
On Thu, Jul 10, 2014 at 11:03 AM, Carlos Hernandez c...@ti.com wrote:
 1) Append no_console_suspend to bootargs
Not needed. ideally with pinctrl wakeup capability, this should work.
if you do no_console_suspend, the module is not powered down.
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Re: OMAP baseline test results for v3.14

2014-04-02 Thread menon.nisha...@gmail.com 
On Wed, Apr 2, 2014 at 11:35 AM, Tony Lindgren t...@atomide.com wrote:
 * Paul Walmsley p...@pwsan.com [140402 09:36]:
 On Wed, 2 Apr 2014, Tony Lindgren wrote:

  * Paul Walmsley p...@pwsan.com [140402 09:07]:
  
   Here are some basic OMAP test results for Linux v3.14.
   Logs and other details at:
  
   http://www.pwsan.com/omap/testlogs/test_v3.14/20140402004448/
  
   Boot to userspace:
   FAIL ( 1/12): 2430sdp
 
  Is this a new regression with MMC? Looks like your boot log for this
  ends with Waiting for root device /dev/mmcblk0p1

 It's new since v3.14-rc1:

 http://www.spinics.net/lists/arm-kernel/msg306448.html

 http://www.spinics.net/lists/arm-kernel/msg306454.html

 http://www.spinics.net/lists/arm-kernel/msg306455.html

 OK looks like I never noticed that one before. Probably
 because of NFSroot.
Paul uses MMC filesystem, I use NFS. As Felipe Pointed out as well, I
did rootcause MMC filesystem mount issue here:
http://marc.info/?l=linux-omapm=139637044425644w=2

NFS does work for me on 3.14 tag  http://slexy.org/raw/s20plaLoaT (on SDP2430)

Regards,
Nishanth Menon
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Re: need help to configure IRQ on gpio 139 pandaboard using device tree

2013-12-11 Thread menon.nisha...@gmail.com 
On Wed, Dec 11, 2013 at 8:28 AM, Denis CIOCCA denis.cio...@st.com wrote:
 Hi everybody,

 I'm trying to configure an IRQ on pandaboard using device tree but I'm
 not able to understand how I can do it.
 I want to configure the the gpio_139 pin and without device tree my
 command was:

 OMAP4_MUX(MCSPI1_SIMO, OMAP_MUX_MODE3 | OMAP_PIN_INPUT_PULLUP),

 I need to associate it to a i2c device, declared in this way:

here is how you'd figure it out in dt world ;) - it might be a little
simpler or harder depending on which end of the development world one
is from... (gmail might be screwing up my formatting a little.. so
apologies before hand.

http://pastebin.mozilla.org/3755622 is a copy if you need one.. anyways,
step 1: from trm, you get to know that the pin is part of core
SYSCTRL_PADCONF_CORE as it states for register instance in the trm.
step 2: you compute the offset
step 3: you define the pinctrl dt node
step 4: you'd provide the device using it reference - rather trivial ;)

diff --git a/arch/arm/boot/dts/omap4-panda-es.dts
b/arch/arm/boot/dts/omap4-panda-es.dts
index 56c4354..8f8d36c 100644
--- a/arch/arm/boot/dts/omap4-panda-es.dts
+++ b/arch/arm/boot/dts/omap4-panda-es.dts
@@ -41,6 +41,25 @@
  0xb6 (PIN_OUTPUT | MUX_MODE3) /* gpio_110 */
  ;
  };
+
+ lsm303d_pins: lsm303d_pins {
+ pinctrl-single,pins = 
+ /*
+ * Example for 4460 device:
+ * from arch/arm/boot/dts/omap4.dtsi:
+ * omap4_pmx_core: reg = 0x4a100040
+ * the base address -- ^^
+ *
+ * Now, the offset is computed as following:
+ * Download TRM: http://www.ti.com/lit/ug/swpu235aa/swpu235aa.pdf
+ * Searching in TRM for MCSPI1_SIMO (page 4145), you see:
+ * 32 bit register 0x4a100134, it is on the higher 16 bits
+ *  0x4a100134(SOMI) + 2 (SIMO) = 0x4a100136
+ * offset hence is = 0x4a100136 - 0x4a100040 = 0xF6
+ */
+ 0xF6 (PIN_INPUT_PULLUP | MUX_MODE3) /* mcspi1_somi.gpio_139 */
+ ;
+ };
 };

 led_wkgpio_pins {
@@ -62,3 +81,16 @@
  gpios = gpio1 8 GPIO_ACTIVE_HIGH;
  };
 };
+i2c4 {
+ pinctrl-names = default;
+ pinctrl-0 = i2c4_pins;
+
+ clock-frequency = 40;
+
+ lsm303d@03 {
+ pinctrl-names = default;
+ pinctrl-0 = lsm303d_pins;
+ compatible = st,lsm303d;
+ reg = 0x03;
+ };
+};
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Re: [PATCH 1/3] ARM: OMAP2+: Add support to parse 'main_clk' info from DT

2013-08-14 Thread menon.nisha...@gmail.com 
Hi Rajendra,
On Tue, Jul 23, 2013 at 1:24 AM, Rajendra Nayak rna...@ti.com wrote:

[...]
 diff --git a/arch/arm/mach-omap2/omap_hwmod.c 
 b/arch/arm/mach-omap2/omap_hwmod.c
 index 5cc5123..12fa589 100644
 --- a/arch/arm/mach-omap2/omap_hwmod.c
 +++ b/arch/arm/mach-omap2/omap_hwmod.c
 @@ -2381,12 +2386,10 @@ static void __init _init_mpu_rt_base(struct 
 omap_hwmod *oh, void *data)
  oh-name);

 /* Extract the IO space from device tree blob */
 -   if (!of_have_populated_dt())
 +   if (!np)
 return;

 -   np = of_dev_hwmod_lookup(of_find_node_by_name(NULL, ocp), 
 oh);
 -   if (np)
 -   va_start = of_iomap(np, 0);
 +   va_start = of_iomap(np, 0);

This hunk needs a rebase with 3.11-rc5
due to commit 130142d91467e8a07f3a863db369225a89e84d75
(ARM: OMAP2+: hwmod: rt address space index for DT)

 } else {
 va_start = ioremap(mem-pa_start, mem-pa_end - 
 mem-pa_start);
 }

[...]
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