diff options
| author | Anson Huang <Anson.Huang@freescale.com> | 2015-12-11 01:40:22 +0800 |
|---|---|---|
| committer | guoyin.chen <guoyin.chen@freescale.com> | 2016-03-04 15:53:35 +0800 |
| commit | ddf4e63c361fe8c4488b73e3b9db575ea5207d66 (patch) | |
| tree | f8cbb558bd1b571e34078f4e258a686583001265 | |
| parent | 7c09ec91b79e3832d7ed7bb0c28e8f6ed9cc178c (diff) | |
| download | u-boot-imx-ddf4e63c361fe8c4488b73e3b9db575ea5207d66.zip u-boot-imx-ddf4e63c361fe8c4488b73e3b9db575ea5207d66.tar.gz u-boot-imx-ddf4e63c361fe8c4488b73e3b9db575ea5207d66.tar.bz2 | |
MLK-11995 ARM: imx7: add i.mx7d TO1.1 support for LPSR mode
i.MX7D TO1.1 changes DDR retension mode control to IOMUXC_GPR,
add support to this change for LPSR which needs to exit from
DDR retension mode.
Signed-off-by: Anson Huang <Anson.Huang@freescale.com>
| -rw-r--r-- | board/freescale/mx7d_12x12_lpddr3_arm2/plugin.S | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/board/freescale/mx7d_12x12_lpddr3_arm2/plugin.S b/board/freescale/mx7d_12x12_lpddr3_arm2/plugin.S index 121e2f0..d075b3e 100644 --- a/board/freescale/mx7d_12x12_lpddr3_arm2/plugin.S +++ b/board/freescale/mx7d_12x12_lpddr3_arm2/plugin.S @@ -70,9 +70,6 @@ subs r6, r6, #0x1 bne 1b - ldr r7, =0x0 - str r7, [r1, #0x380] - /* clear ddr_phy reset */ ldr r6, =0x1000 ldr r7, [r2, r6] @@ -206,14 +203,27 @@ bic r7, r7, #0x2 str r7, [r2, r6] + ldr r7, [r1, #0x800] + and r7, r7, #0x11 + cmp r7, #0x10 + beq 2f + + /* TO1.1 */ + ldr r7, [r11] + bic r7, r7, #(1 << 27) + str r7, [r11] + ldr r7, [r11] + bic r7, r7, #(1 << 29) + str r7, [r11] +2: ldr r7, =(0x1 << 30) str r7, [r1, #0x380] /* need to delay ~5mS */ - ldr r6, =0x1000000 -2: + ldr r6, =0x100000 +3: subs r6, r6, #0x1 - bne 2b + bne 3b /* restore DDR PHY */ ldr r6, =0x0 |