linux-kernel - Re: [PATCH 1/6] soc: qcom: ocmem: Fix NUM_PORTS & NUM

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Message-ID: <53f6e9c7-26e2-94be-fa02-0c3cbb65372b@linaro.org>
Date:   Tue, 9 May 2023 23:31:15 +0100
From:   Caleb Connolly <caleb.connolly@...aro.org>
To:     Luca Weiss <luca@...tu.xyz>, ~postmarketos/upstreaming@...ts.sr.ht,
        phone-devel@...r.kernel.org, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Rob Clark <robdclark@...il.com>,
        Brian Masney <masneyb@...tation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH 1/6] soc: qcom: ocmem: Fix NUM_PORTS & NUM_MACROS macros



On 07/05/2023 10:12, Luca Weiss wrote:
> Since we're using these two macros to read a value from a register, we
> need to use the FIELD_GET instead of the FIELD_PREP macro, otherwise
> we're getting wrong values.
> 
> So instead of:
> 
>   [    3.111779] ocmem fdd00000.sram: 2 ports, 1 regions, 512 macros, not interleaved
> 
> we now get the correct value of:
> 
>   [    3.129672] ocmem fdd00000.sram: 2 ports, 1 regions, 2 macros, not interleaved
> 
> Fixes: 88c1e9404f1d ("soc: qcom: add OCMEM driver")
> Signed-off-by: Luca Weiss <luca@...tu.xyz>

Reviewed-by: Caleb Connolly <caleb.connolly@...aro.org>
> ---
>  drivers/soc/qcom/ocmem.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/soc/qcom/ocmem.c b/drivers/soc/qcom/ocmem.c
> index 199fe9872035..c3e78411c637 100644
> --- a/drivers/soc/qcom/ocmem.c
> +++ b/drivers/soc/qcom/ocmem.c
> @@ -76,8 +76,8 @@ struct ocmem {
>  #define OCMEM_REG_GFX_MPU_START			0x00001004
>  #define OCMEM_REG_GFX_MPU_END			0x00001008
>  
> -#define OCMEM_HW_PROFILE_NUM_PORTS(val)		FIELD_PREP(0x0000000f, (val))
> -#define OCMEM_HW_PROFILE_NUM_MACROS(val)	FIELD_PREP(0x00003f00, (val))
> +#define OCMEM_HW_PROFILE_NUM_PORTS(val)		FIELD_GET(0x0000000f, (val))
> +#define OCMEM_HW_PROFILE_NUM_MACROS(val)	FIELD_GET(0x00003f00, (val))
>  
>  #define OCMEM_HW_PROFILE_LAST_REGN_HALFSIZE	0x00010000
>  #define OCMEM_HW_PROFILE_INTERLEAVING		0x00020000
> 

-- 
Kind Regards,
Caleb (they/them)