linux-kernel - Re: [PATCH 1/4] pcie: qcom: Fix the macro PARF_SLV_ADDR_SPACE_SIZE_2_3

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Message-ID: <20230623180026.GA181743@bhelgaas>
Date:   Fri, 23 Jun 2023 13:00:26 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Sricharan Ramabadhran <quic_srichara@...cinc.com>
Cc:     agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, sboyd@...nel.org, mturquette@...libre.com,
        mani@...nel.org, lpieralisi@...nel.org, bhelgaas@...gle.com,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-pci@...r.kernel.org
Subject: Re: [PATCH 1/4] pcie: qcom: Fix the macro
 PARF_SLV_ADDR_SPACE_SIZE_2_3_3

On Fri, Jun 23, 2023 at 03:04:42PM +0530, Sricharan Ramabadhran wrote:
> PARF_SLV_ADDR_SPACE_SIZE_2_3_3 macro used for IPQ8074
> pcie slave addr size was initially set to 0x358, but
> was wrongly changed to 0x168 as a part of
> 'PCI: qcom: Sort and group registers and bitfield definitions'
> Fixing it back to right value here.

1) Make your subject line match the history.  For example, you're
fixing 769e49d87b15 ("PCI: qcom: Sort and group registers ..."), so
your subject line should start with "PCI: qcom: ...".

2) It doesn't look like 769e49d87b15 changed
PARF_SLV_ADDR_SPACE_SIZE_2_3_3:

  $ git show 769e49d87b15 | grep PARF_SLV_ADDR_SPACE_SIZE_2_3_3
  +#define PARF_SLV_ADDR_SPACE_SIZE_2_3_3		0x16C /* Register offset specific to IP ver 2.3.3 */
  -#define PARF_SLV_ADDR_SPACE_SIZE_2_3_3		0x16C /* Register offset specific to IP rev 2.3.3 */

What am I missing here?  Do you have another out-of-tree patch that
broke this?

Bjorn

> Without this pcie bring up on IPQ8074 is broken now.
> 
> Fixes: 769e49d87b15 ("PCI: qcom: Sort and group registers and bitfield definitions")
> Signed-off-by: Sricharan Ramabadhran <quic_srichara@...cinc.com>
> ---
>  drivers/pci/controller/dwc/pcie-qcom.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c
> index 4ab30892f6ef..59823beed13f 100644
> --- a/drivers/pci/controller/dwc/pcie-qcom.c
> +++ b/drivers/pci/controller/dwc/pcie-qcom.c
> @@ -43,7 +43,7 @@
>  #define PARF_PHY_REFCLK				0x4c
>  #define PARF_CONFIG_BITS			0x50
>  #define PARF_DBI_BASE_ADDR			0x168
> -#define PARF_SLV_ADDR_SPACE_SIZE_2_3_3		0x16c /* Register offset specific to IP ver 2.3.3 */
> +#define PARF_SLV_ADDR_SPACE_SIZE_2_3_3		0x358 /* Register offset specific to IP ver 2.3.3 */
>  #define PARF_MHI_CLOCK_RESET_CTRL		0x174
>  #define PARF_AXI_MSTR_WR_ADDR_HALT		0x178
>  #define PARF_AXI_MSTR_WR_ADDR_HALT_V2		0x1a8
> -- 
> 2.34.1
>