Re: [PATCH v5 2/7] scsi: ufs-qcom: Add reset control support for host controller

[Vinod Koul]

On 19-12-19, 15:12, cang@xxxxxxxxxxxxxx wrote:
> On 2019-12-18 12:12, Vinod Koul wrote:
> > On 18-12-19, 02:44, cang@xxxxxxxxxxxxxx wrote:

> 
> Aside of the phy settings, your DT needs some modifications too,
> seems you copied most of them from sdm845.
> https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux.git/commit/?h=for-next&id=3834a2e92229ef26d30de28acb698b2b23d3e397
> 
> <--snip-->
> > +		ufs_mem_phy: phy@1d87000 {
> > +			compatible = "qcom,sm8150-qmp-ufs-phy";
> > +			reg = <0 0x01d87000 0 0x18c>;
> 
> The size 0x18c is wrong, in the code you are even accessing registers
> whose offsets are beyond 0x18c, see
> 
> #define QSERDES_V4_COM_BIN_VCOCAL_CMP_CODE1_MODE0	0x1ac
> #define QSERDES_V4_COM_BIN_VCOCAL_CMP_CODE2_MODE0	0x1b0
> #define QSERDES_V4_COM_BIN_VCOCAL_CMP_CODE1_MODE1	0x1b4
> #define QSERDES_V4_COM_BIN_VCOCAL_HSCLK_SEL		0x1bc
> #define QSERDES_V4_COM_BIN_VCOCAL_CMP_CODE2_MODE1	0x1b8
> 
> FYI, the total size of serdes registers is 0x1c0.

Yeah I will update it to 0x1c0

> 
> <--snip-->
> > +			ufs_mem_phy_lanes: lanes@1d87400 {
> > +				reg = <0 0x01d87400 0 0x108>,
> > +				      <0 0x01d87600 0 0x1e0>,
> > +				      <0 0x01d87c00 0 0x1dc>,
> 
> Same as above, see
> 
> #define QPHY_V4_MULTI_LANE_CTRL1			0x1e0
> 
> FYI, the total size of PCS registers is 0x200
> 
> > +				      <0 0x01d87800 0 0x108>,
> > +				      <0 0x01d87a00 0 0x1e0>;
> > +				#phy-cells = <0>;
> > +			};
> <--snip-->

So I managed to fix it by configuring QPHY_SW_RESET in
qcom_qmp_phy_com_init() before invoking the configuration. That makes it
work for me. Will send patches shortly

-- 
~Vinod