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Date: Tue, 21 Jul 2020 06:28:04 +0000
From: Sai Krishna Potthuri <lakshmis@...inx.com>
To: Rob Herring <robh@...nel.org>
CC: Philipp Zabel <p.zabel@...gutronix.de>,
Michal Simek <michals@...inx.com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
git <git@...inx.com>,
"saikrishna12468@...il.com" <saikrishna12468@...il.com>
Subject: RE: [PATCH 1/2] dt-bindings: reset: Updated binding for Versal reset
driver
Hi Rob,
Thanks for the review
> -----Original Message-----
> From: Rob Herring <robh@...nel.org>
> Sent: Tuesday, July 21, 2020 7:38 AM
> To: Sai Krishna Potthuri <lakshmis@...inx.com>
> Cc: Philipp Zabel <p.zabel@...gutronix.de>; Michal Simek
> <michals@...inx.com>; devicetree@...r.kernel.org; linux-arm-
> kernel@...ts.infradead.org; linux-kernel@...r.kernel.org; git
> <git@...inx.com>; saikrishna12468@...il.com
> Subject: Re: [PATCH 1/2] dt-bindings: reset: Updated binding for Versal reset
> driver
>
> On Tue, Jul 14, 2020 at 11:59:08AM +0530, Sai Krishna Potthuri wrote:
> > Added documentation and Versal reset indices to describe about Versal
> > reset driver bindings.
> >
> > Signed-off-by: Sai Krishna Potthuri
> > <lakshmi.sai.krishna.potthuri@...inx.com>
> > ---
> > .../bindings/reset/xlnx,zynqmp-reset.txt | 11 +-
> > .../dt-bindings/reset/xlnx-versal-resets.h | 105 ++++++++++++++++++
> > 2 files changed, 112 insertions(+), 4 deletions(-) create mode
> > 100644 include/dt-bindings/reset/xlnx-versal-resets.h
> >
> > diff --git
> > a/Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.txt
> > b/Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.txt
> > index 27a45fe5ecf1..ed836868dbf1 100644
> > --- a/Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.txt
> > +++ b/Documentation/devicetree/bindings/reset/xlnx,zynqmp-reset.txt
> > @@ -1,7 +1,7 @@
> >
> > ----------------------------------------------------------------------
> > ----
> > - = Zynq UltraScale+ MPSoC reset driver binding =
> > + = Zynq UltraScale+ MPSoC and Versal reset driver binding =
> >
> > ----------------------------------------------------------------------
> > ---- -The Zynq UltraScale+ MPSoC has several different resets.
> > +The Zynq UltraScale+ MPSoC and Versal has several different resets.
> >
> > See Chapter 36 of the Zynq UltraScale+ MPSoC TRM (UG) for more
> > information about zynqmp resets.
> > @@ -10,7 +10,8 @@ Please also refer to reset.txt in this directory for
> > common reset controller binding usage.
> >
> > Required Properties:
> > -- compatible: "xlnx,zynqmp-reset"
> > +- compatible: "xlnx,zynqmp-reset" for Zynq UltraScale+ MPSoC
> platform
> > + "xlnx,versal-reset" for Versal platform
> > - #reset-cells: Specifies the number of cells needed to encode reset
> > line, should be 1
> >
> > @@ -37,8 +38,10 @@ Device nodes that need access to reset lines should
> > specify them as a reset phandle in their corresponding node as
> > specified in reset.txt.
> >
> > -For list of all valid reset indicies see
> > +For list of all valid reset indices for Zynq UltraScale+ MPSoC see
> > <dt-bindings/reset/xlnx-zynqmp-resets.h>
> > +For list of all valid reset indices for Versal see
> > +<dt-bindings/reset/xlnx-versal-resets.h>
> >
> > Example:
> >
> > diff --git a/include/dt-bindings/reset/xlnx-versal-resets.h
> > b/include/dt-bindings/reset/xlnx-versal-resets.h
> > new file mode 100644
> > index 000000000000..895424e9b0e5
> > --- /dev/null
> > +++ b/include/dt-bindings/reset/xlnx-versal-resets.h
> > @@ -0,0 +1,105 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +/*
> > + * Copyright (C) 2020 Xilinx, Inc.
> > + */
> > +
> > +#ifndef _DT_BINDINGS_VERSAL_RESETS_H
> > +#define _DT_BINDINGS_VERSAL_RESETS_H
> > +
> > +#define VERSAL_RST_PMC_POR (0xc30c001U)
>
> Perhaps some explanation on the numbering as ZynqMP seems to be just an
> index.
In versal, all ID's includes Class, SubClass, Type, Index information whereas class
refers to clock, reset, power etc., Underlying firmware in Versal have such
classification and expects the ID to be this way.
[13:0] - Index bits
[19:14] - Type bits
[25:20] - SubClass bits
[31:26] - Class bits
I will add this information in this file in v2.
Regards
Sai Krishna
>
> > +#define VERSAL_RST_PMC (0xc410002U)
> > +#define VERSAL_RST_PS_POR (0xc30c003U)
> > +#define VERSAL_RST_PL_POR (0xc30c004U)
> > +#define VERSAL_RST_NOC_POR (0xc30c005U)
> > +#define VERSAL_RST_FPD_POR (0xc30c006U)
> > +#define VERSAL_RST_ACPU_0_POR (0xc30c007U)
> > +#define VERSAL_RST_ACPU_1_POR (0xc30c008U)
> > +#define VERSAL_RST_OCM2_POR (0xc30c009U)
> > +#define VERSAL_RST_PS_SRST (0xc41000aU)
> > +#define VERSAL_RST_PL_SRST (0xc41000bU)
> > +#define VERSAL_RST_NOC (0xc41000cU)
> > +#define VERSAL_RST_NPI (0xc41000dU)
> > +#define VERSAL_RST_SYS_RST_1 (0xc41000eU)
> > +#define VERSAL_RST_SYS_RST_2 (0xc41000fU)
> > +#define VERSAL_RST_SYS_RST_3 (0xc410010U)
> > +#define VERSAL_RST_FPD (0xc410011U)
> > +#define VERSAL_RST_PL0 (0xc410012U)
> > +#define VERSAL_RST_PL1 (0xc410013U)
> > +#define VERSAL_RST_PL2 (0xc410014U)
> > +#define VERSAL_RST_PL3 (0xc410015U)
> > +#define VERSAL_RST_APU (0xc410016U)
> > +#define VERSAL_RST_ACPU_0 (0xc410017U)
> > +#define VERSAL_RST_ACPU_1 (0xc410018U)
> > +#define VERSAL_RST_ACPU_L2 (0xc410019U)
> > +#define VERSAL_RST_ACPU_GIC (0xc41001aU)
> > +#define VERSAL_RST_RPU_ISLAND (0xc41001bU)
> > +#define VERSAL_RST_RPU_AMBA (0xc41001cU)
> > +#define VERSAL_RST_R5_0 (0xc41001dU)
> > +#define VERSAL_RST_R5_1 (0xc41001eU)
> > +#define VERSAL_RST_SYSMON_PMC_SEQ_RST (0xc41001fU)
> > +#define VERSAL_RST_SYSMON_PMC_CFG_RST (0xc410020U)
> > +#define VERSAL_RST_SYSMON_FPD_CFG_RST (0xc410021U)
> > +#define VERSAL_RST_SYSMON_FPD_SEQ_RST (0xc410022U)
> > +#define VERSAL_RST_SYSMON_LPD (0xc410023U)
> > +#define VERSAL_RST_PDMA_RST1 (0xc410024U)
> > +#define VERSAL_RST_PDMA_RST0 (0xc410025U)
> > +#define VERSAL_RST_ADMA (0xc410026U)
> > +#define VERSAL_RST_TIMESTAMP (0xc410027U)
> > +#define VERSAL_RST_OCM (0xc410028U)
> > +#define VERSAL_RST_OCM2_RST (0xc410029U)
> > +#define VERSAL_RST_IPI (0xc41002aU)
> > +#define VERSAL_RST_SBI (0xc41002bU)
> > +#define VERSAL_RST_LPD (0xc41002cU)
> > +#define VERSAL_RST_QSPI (0xc10402dU)
> > +#define VERSAL_RST_OSPI (0xc10402eU)
> > +#define VERSAL_RST_SDIO_0 (0xc10402fU)
> > +#define VERSAL_RST_SDIO_1 (0xc104030U)
> > +#define VERSAL_RST_I2C_PMC (0xc104031U)
> > +#define VERSAL_RST_GPIO_PMC (0xc104032U)
> > +#define VERSAL_RST_GEM_0 (0xc104033U)
> > +#define VERSAL_RST_GEM_1 (0xc104034U)
> > +#define VERSAL_RST_SPARE (0xc104035U)
> > +#define VERSAL_RST_USB_0 (0xc104036U)
> > +#define VERSAL_RST_UART_0 (0xc104037U)
> > +#define VERSAL_RST_UART_1 (0xc104038U)
> > +#define VERSAL_RST_SPI_0 (0xc104039U)
> > +#define VERSAL_RST_SPI_1 (0xc10403aU)
> > +#define VERSAL_RST_CAN_FD_0 (0xc10403bU)
> > +#define VERSAL_RST_CAN_FD_1 (0xc10403cU)
> > +#define VERSAL_RST_I2C_0 (0xc10403dU)
> > +#define VERSAL_RST_I2C_1 (0xc10403eU)
> > +#define VERSAL_RST_GPIO_LPD (0xc10403fU)
> > +#define VERSAL_RST_TTC_0 (0xc104040U)
> > +#define VERSAL_RST_TTC_1 (0xc104041U)
> > +#define VERSAL_RST_TTC_2 (0xc104042U)
> > +#define VERSAL_RST_TTC_3 (0xc104043U)
> > +#define VERSAL_RST_SWDT_FPD (0xc104044U)
> > +#define VERSAL_RST_SWDT_LPD (0xc104045U)
> > +#define VERSAL_RST_USB (0xc104046U)
> > +#define VERSAL_RST_DPC (0xc208047U)
> > +#define VERSAL_RST_PMCDBG (0xc208048U)
> > +#define VERSAL_RST_DBG_TRACE (0xc208049U)
> > +#define VERSAL_RST_DBG_FPD (0xc20804aU)
> > +#define VERSAL_RST_DBG_TSTMP (0xc20804bU)
> > +#define VERSAL_RST_RPU0_DBG (0xc20804cU)
> > +#define VERSAL_RST_RPU1_DBG (0xc20804dU)
> > +#define VERSAL_RST_HSDP (0xc20804eU)
> > +#define VERSAL_RST_DBG_LPD (0xc20804fU)
> > +#define VERSAL_RST_CPM_POR (0xc30c050U)
> > +#define VERSAL_RST_CPM (0xc410051U)
> > +#define VERSAL_RST_CPMDBG (0xc208052U)
> > +#define VERSAL_RST_PCIE_CFG (0xc410053U)
> > +#define VERSAL_RST_PCIE_CORE0 (0xc410054U)
> > +#define VERSAL_RST_PCIE_CORE1 (0xc410055U)
> > +#define VERSAL_RST_PCIE_DMA (0xc410056U)
> > +#define VERSAL_RST_CMN (0xc410057U)
> > +#define VERSAL_RST_L2_0 (0xc410058U)
> > +#define VERSAL_RST_L2_1 (0xc410059U)
> > +#define VERSAL_RST_ADDR_REMAP (0xc41005aU)
> > +#define VERSAL_RST_CPI0 (0xc41005bU)
> > +#define VERSAL_RST_CPI1 (0xc41005cU)
> > +#define VERSAL_RST_XRAM (0xc30c05dU)
> > +#define VERSAL_RST_AIE_ARRAY (0xc10405eU)
> > +#define VERSAL_RST_AIE_SHIM (0xc10405fU)
> > +
> > +#endif
> > --
> > 2.17.1
> >
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