From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Shevchenko Date: Wed, 11 Mar 2020 13:54:58 +0200 Subject: [PATCH] versal: watchdog: Add support for Xilinx window watchdog In-Reply-To: <66f1396f-bb10-90dd-6bbf-49615a1ac26a@xilinx.com> References: <2204261a8e80503d41bec1b0eb68e00080be5c4c.1583923701.git.michal.simek@xilinx.com> <66f1396f-bb10-90dd-6bbf-49615a1ac26a@xilinx.com> Message-ID: <20200311115458.GH1922688@smile.fi.intel.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Wed, Mar 11, 2020 at 12:34:33PM +0100, Michal Simek wrote: > On 11. 03. 20 12:25, Stefan Roese wrote: > > On 11.03.20 11:48, Michal Simek wrote: > >> From: Ashok Reddy Soma > >> +struct wwdt_regs { > >> +??? u32 reserved0[1024]; > >> +??? u32 refresh;??????? /* Refresh Register [0x1000] */ > >> +??? u32 reserved1[1023]; > >> +??? u32 csr;??????? /* Control/Status Register [0x2000] */ > >> +??? u32 reserved2; > >> +??? u32 offset;??????? /* Offset Register [0x2008] */ > >> +??? u32 reserved3; > >> +??? u32 cmp0;??????? /* Compare Value Register0 [0x2010] */ > >> +??? u32 cmp1;??????? /* Compare Value Register1 [0x2014] */ > >> +??? u32 reserved4[1006]; > >> +??? u32 warmrst;??????? /* Warm Reset Register [0x2FD0] */ > >> +}; > > > > My understanding is, that we moved to using defines instead of structs > > for register definitions. So if you need to send a v2, then please > > consider using #defines here. > > When was that decision done? Any link to documentation/commit message? > > Origin driver had macros but I have asked Ashok to change it to > structure based. I don't know how many wasted kbytes Xilinx can afford, but in general it's a bad example to waste memory as above. Any issues with regmap approach? -- With Best Regards, Andy Shevchenko