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authorFabio Estevam <fabio.estevam@freescale.com>2014-11-25 13:11:08 -0200
committerStefano Babic <sbabic@denx.de>2014-12-01 10:20:19 +0100
commita847fff11cc4f3745d0087d45d2e5964c47f55d2 (patch)
tree0380e6c27c0ae0ee9beb890f934117f0b8c5cd99 /drivers/misc
parent4b16fd228673a027ab122e33819695e9b7c73dd3 (diff)
mxc_ocotp: Do not disable the OCOTP clock after every access
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@freescale.com> Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau.dev@gmail.com>
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/mxc_ocotp.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/misc/mxc_ocotp.c b/drivers/misc/mxc_ocotp.c
index 89737af9b73..d92044eeda2 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;