Port of patch from linux-arm-kernel: | From Bryan O'Donoghue <[email protected]> | | nvmem: imx-ocotp: Ensure WAIT bits are preserved when setting timing | | The i.MX6 and i.MX8 both have a bit-field spanning bits 27:22 called the | WAIT field. | | The WAIT field according to the documentation for both parts "specifies | time interval between auto read and write access in one time program. It is | given in number of ipg_clk periods." | | This patch ensures that the relevant field is read and written back to the | timing register.
Signed-off-by: Rouven Czerwinski <[email protected]> --- drivers/nvmem/ocotp.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/nvmem/ocotp.c b/drivers/nvmem/ocotp.c index ab543b475f..c21327805b 100644 --- a/drivers/nvmem/ocotp.c +++ b/drivers/nvmem/ocotp.c @@ -59,6 +59,7 @@ #define OCOTP_TIMING_STROBE_READ_MASK 0x003F0000 #define OCOTP_TIMING_RELAX_MASK 0x0000F000 #define OCOTP_TIMING_STROBE_PROG_MASK 0x00000FFF +#define OCOTP_TIMING_WAIT_MASK 0x0FC00000 #define OCOTP_READ_CTRL_READ_FUSE 0x00000001 @@ -124,7 +125,8 @@ static int imx6_ocotp_set_timing(struct ocotp_priv *priv) strobe_prog = clk_rate / (1000000000 / 10000) + 2 * (DEF_RELAX + 1) - 1; strobe_read = clk_rate / (1000000000 / 40) + 2 * (DEF_RELAX + 1) - 1; - timing = BF(relax, OCOTP_TIMING_RELAX); + timing = readl(priv->base + OCOTP_TIMING) & OCOTP_TIMING_WAIT_MASK; + timing |= BF(relax, OCOTP_TIMING_RELAX); timing |= BF(strobe_read, OCOTP_TIMING_STROBE_READ); timing |= BF(strobe_prog, OCOTP_TIMING_STROBE_PROG); -- 2.22.0 _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
