linux-kernel - Re: [PATCH resend 2/2] mfd: intel_soc_pmic: Differentiate between Bay and Cherry Trail CRC variants

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Date:   Tue, 5 Sep 2017 08:39:27 +0100
From:   Lee Jones <lee.jones@...aro.org>
To:     Hans de Goede <hdegoede@...hat.com>
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH resend 2/2] mfd: intel_soc_pmic: Differentiate between
 Bay and Cherry Trail CRC variants

On Mon, 04 Sep 2017, Hans de Goede wrote:

> Both Bay and Cherry Trail devices may be used together with a Crystal Cove
> PMIC. Each platform has its own variant of the PMIC, which both use the
> same ACPI HID, but they are not 100% compatible.
> 
> This commits makes the intel_soc_pmic_core code check the _HRV of the
> ACPI-firmware-node and selects intel_soc_pmic_config_byt_crc resp.
> intel_soc_pmic_config_cht_crc based on this.
> 
> This fixes the Bay Trail specific ACPI OpRegion code causing problems
> on Cherry Trail devices. Specifically this was causing the external
> microsd slot on a Dell Venue 8 5855 (Cherry Trail version) to not work
> and the eMMC to become unreliable and throw lots of errors.
> 
> Fixes: 5165238460 ("mfd: intel_soc_pmic: Core driver")
> Reported-and-tested-by: russianneuromancer <russianneuromancer@...ru>
> Signed-off-by: Hans de Goede <hdegoede@...hat.com>
> Reviewed-by: Andy Shevchenko <andy.shevchenko@...il.com>
> Acked-for-MFD-by: Lee Jones <lee.jones@...aro.org>
> ---
>  drivers/mfd/Kconfig               |  4 ++--
>  drivers/mfd/intel_soc_pmic_core.c | 34 ++++++++++++++++++++++++++++------
>  2 files changed, 30 insertions(+), 8 deletions(-)

Applied, thanks.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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