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From: Peter Maydell <peter.maydell@linaro.org>
To: qemu-devel@nongnu.org
Subject: [PULL 20/23] hw/misc: imx6_ccm: Update PMU_MISC0 reset value
Date: Fri,  8 Jan 2021 15:36:18 +0000	[thread overview]
Message-ID: <20210108153621.3868-21-peter.maydell@linaro.org> (raw)
In-Reply-To: <20210108153621.3868-1-peter.maydell@linaro.org>

From: Bin Meng <bin.meng@windriver.com>

U-Boot expects PMU_MISC0 register bit 7 is set (see init_bandgap()
in arch/arm/mach-imx/mx6/soc.c) during boot. This bit indicates the
bandgap has stabilized.

With this change, the latest upstream U-Boot (v2021.01-rc3) for imx6
sabrelite board (mx6qsabrelite_defconfig), with a slight change made
by switching CONFIG_OF_SEPARATE to CONFIG_OF_EMBED, boots to U-Boot
shell on QEMU with the following command:

$ qemu-system-arm -M sabrelite -smp 4 -m 1G -kernel u-boot \
    -display none -serial null -serial stdio

Boot log below:

  U-Boot 2021.01-rc3 (Dec 12 2020 - 17:40:02 +0800)

  CPU:   Freescale i.MX?? rev1.0 at 792 MHz
  Reset cause: POR
  Model: Freescale i.MX6 Quad SABRE Lite Board
  Board: SABRE Lite
  I2C:   ready
  DRAM:  1 GiB
  force_idle_bus: sda=0 scl=0 sda.gp=0x5c scl.gp=0x55
  force_idle_bus: failed to clear bus, sda=0 scl=0
  force_idle_bus: sda=0 scl=0 sda.gp=0x6d scl.gp=0x6c
  force_idle_bus: failed to clear bus, sda=0 scl=0
  force_idle_bus: sda=0 scl=0 sda.gp=0xcb scl.gp=0x5
  force_idle_bus: failed to clear bus, sda=0 scl=0
  MMC:   FSL_SDHC: 0, FSL_SDHC: 1
  Loading Environment from MMC... *** Warning - No block device, using default environment

  In:    serial
  Out:   serial
  Err:   serial
  Net:   Board Net Initialization Failed
  No ethernet found.
  starting USB...
  Bus usb@2184000: usb dr_mode not found
  USB EHCI 1.00
  Bus usb@2184200: USB EHCI 1.00
  scanning bus usb@2184000 for devices... 1 USB Device(s) found
  scanning bus usb@2184200 for devices... 1 USB Device(s) found
         scanning usb for storage devices... 0 Storage Device(s) found
         scanning usb for ethernet devices... 0 Ethernet Device(s) found
  Hit any key to stop autoboot:  0
  =>

Signed-off-by: Bin Meng <bin.meng@windriver.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20210106063504.10841-2-bmeng.cn@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 hw/misc/imx6_ccm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/misc/imx6_ccm.c b/hw/misc/imx6_ccm.c
index cb740427eca..7e031b67757 100644
--- a/hw/misc/imx6_ccm.c
+++ b/hw/misc/imx6_ccm.c
@@ -450,7 +450,7 @@ static void imx6_ccm_reset(DeviceState *dev)
     s->analog[PMU_REG_3P0] = 0x00000F74;
     s->analog[PMU_REG_2P5] = 0x00005071;
     s->analog[PMU_REG_CORE] = 0x00402010;
-    s->analog[PMU_MISC0] = 0x04000000;
+    s->analog[PMU_MISC0] = 0x04000080;
     s->analog[PMU_MISC1] = 0x00000000;
     s->analog[PMU_MISC2] = 0x00272727;
 
-- 
2.20.1



  parent reply	other threads:[~2021-01-08 15:57 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-08 15:35 [PULL 00/23] target-arm queue Peter Maydell
2021-01-08 15:35 ` [PULL 01/23] intc/arm_gic: Fix gic_irq_signaling_enabled() for vCPUs Peter Maydell
2021-01-08 15:36 ` [PULL 02/23] hw/arm/virt: Remove virt machine state 'smp_cpus' Peter Maydell
2021-01-08 15:36 ` [PULL 03/23] target/arm: Fix MTE0_ACTIVE Peter Maydell
2021-01-08 15:36 ` [PULL 04/23] hw/intc/armv7m_nvic: Correct handling of CCR.BFHFNMIGN Peter Maydell
2021-01-08 15:36 ` [PULL 05/23] target/arm: Correct store of FPSCR value via FPCXT_S Peter Maydell
2021-01-08 15:36 ` [PULL 06/23] target/arm: Implement FPCXT_NS fp system register Peter Maydell
2021-01-08 15:36 ` [PULL 07/23] target/arm: Implement Cortex-M55 model Peter Maydell
2021-01-08 15:36 ` [PULL 08/23] hw/arm/highbank: Drop dead KVM support code Peter Maydell
2021-01-08 15:36 ` [PULL 09/23] util/qemu-timer: Make timer_free() imply timer_del() Peter Maydell
2021-01-08 15:36 ` [PULL 10/23] scripts/coccinelle: New script to remove unnecessary timer_del() calls Peter Maydell
2021-01-08 15:36 ` [PULL 11/23] Remove superfluous " Peter Maydell
2021-01-08 15:36 ` [PULL 12/23] target/arm: Remove timer_del()/timer_deinit() before timer_free() Peter Maydell
2021-01-08 15:36 ` [PULL 13/23] digic-timer: Use ptimer_free() in the finalize function to avoid memleaks Peter Maydell
2021-01-08 15:36 ` [PULL 14/23] allwinner-a10-pit: " Peter Maydell
2021-01-08 15:36 ` [PULL 15/23] exynos4210_rtc: " Peter Maydell
2021-01-08 15:36 ` [PULL 16/23] exynos4210_pwm: " Peter Maydell
2021-01-08 15:36 ` [PULL 17/23] mss-timer: " Peter Maydell
2021-01-08 15:36 ` [PULL 18/23] musicpal: " Peter Maydell
2021-01-08 15:36 ` [PULL 19/23] exynos4210_mct: " Peter Maydell
2021-01-08 15:36 ` Peter Maydell [this message]
2021-01-08 15:36 ` [PULL 21/23] hw/msic: imx6_ccm: Correct register value for silicon type Peter Maydell
2021-01-08 15:36 ` [PULL 22/23] hw/arm: sabrelite: Connect the Ethernet PHY at address 6 Peter Maydell
2021-01-08 15:36 ` [PULL 23/23] docs/system: arm: Add sabrelite board description Peter Maydell
2021-01-08 17:49 ` [PULL 00/23] target-arm queue Peter Maydell
2021-01-10 19:08   ` 罗勇刚(Yonggang Luo)

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