[U-Boot] [PATCH 1/2] mxc_ocotp: Do not disable the OCOTP clock after every access

[Fabio Estevam]

Leave the OCOTP turned on, so that we subsequent access do not fail.

After enabling the thermal driver on a mx6sxsabresd board:

U-Boot 2015.01-rc1-18267-g99d4189-dirty (Nov 24 2014 - 12:59:01)               
                                                                               
CPU:   Freescale i.MX6SX rev1.0 at 792 MHz                                     
CPU:   Temperature 48 C                                                        
Reset cause: POR                                                               
Board: MX6SX SABRE SDB                                                         
I2C:   ready                                                                   
DRAM:  1 GiB                                                                   
PMIC:  PFUZE100 ID=0x10                                                        
MMC:   FSL_SDHC: 0, FSL_SDHC: 1, FSL_SDHC: 2                                   
  00:01.0     - 16c3:abcd - Bridge device                                      
   01:00.0    - 8086:08b1 - Network controller                                 
In:    serial                                                                  
Out:   serial                                                                  
Err:   serial                                                                  
Net:  
(hang)

As the thermal driver accesses the ocotp registers, its clock will be disabled
afterwards.

Then when the MAC address is read (also from ocotp registers) it will cause a
hang.

Do not disable the ocotp clock to prevent this problem.

Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
---
 drivers/misc/mxc_ocotp.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/misc/mxc_ocotp.c b/drivers/misc/mxc_ocotp.c
index 3de1245..67f9429 100644
--- a/drivers/misc/mxc_ocotp.c
+++ b/drivers/misc/mxc_ocotp.c
@@ -81,8 +81,6 @@ static int finish_access(struct ocotp_regs *regs, const char *caller)
 	err = !!(readl(&regs->ctrl) & BM_CTRL_ERROR);
 	clear_error(regs);
 
-	enable_ocotp_clk(0);
-
 	if (err) {
 		printf("mxc_ocotp %s(): Access protect error\n", caller);
 		return -EIO;
-- 
1.9.1