On 05.11.2012 12:03, Philip, Avinash wrote: > On Fri, Nov 02, 2012 at 20:55:56, Daniel Mack wrote: >> This patch adds basic DT bindings for OMAP GPMC. >> >> The actual peripherals are instanciated from child nodes within the GPMC >> node, and the only type of device that is currently supported is NAND. >> >> Code was added to parse the generic GPMC timing parameters and some >> documentation with examples on how to use them. >> >> Successfully tested on an AM33xx board. >> >> Signed-off-by: Daniel Mack <zon...@gmail.com> > [...] >> + >> + nand@0,0 { >> + reg = <0 0 0>; /* CS0, offset 0 */ >> + nand-bus-width = <16>; >> + nand-ecc-mode = "none"; >> + >> + gpmc,sync-clk = <0>; >> + gpmc,cs-on = <0>; >> + gpmc,cs-rd-off = <36>; >> + gpmc,cs-wr-off = <36>; >> + gpmc,adv-on = <6>; >> + gpmc,adv-rd-off = <24>; >> + gpmc,adv-wr-off = <36>; >> + gpmc,we-off = <30>; >> + gpmc,oe-off = <48>; >> + gpmc,access = <54>; >> + gpmc,rd-cycle = <72>; >> + gpmc,wr-cycle = <72>; >> + gpmc,wr-access = <30>; >> + gpmc,wr-data-mux-bus = <0>; >> + >> + #address-cells = <1>; >> + #size-cells = <1>; >> + > > Can you take the timings (for example) from arago tree. The timings is tested > in am335x-evm > So the timings can be directly used to populate GPMC timings. Timings can > found at > > http://arago-project.org/git/projects/?p=linux-am33x.git;a=commitdiff; > h=66bfbd2c5b35dc81edce0c24843c476161ab5978;hp=370630359cb8db711cf0941cd2a242e28ccfb61e > > [...] >> +static int gpmc_probe_dt(struct platform_device *pdev) > > Can you take care of the following section mismatch. > WARNING: vmlinux.o(.text+0x1e2d0): Section mismatch in reference > from the function gpmc_probe_dt() to the function .init.text:gpmc_nand_init().
Sore, both fixed for v4. > [...] >> + >> + val = of_get_nand_ecc_mode(child); >> + if (val >= 0) >> + gpmc_nand_data->ecc_opt = val; > > This will fail for BCH. Index of "soft_bch" is 5 & also don't have selection > option between for BCH4 & BCH8 also. > Can you use the of_property_read_u32 (as done early) to pass the ecc selection > from dt file. This will help selection of BCH4 & BCH8 ecc options. Hmm. Shouldn't we rather teach of_get_nand_ecc_mode() that two modes and bring the enum in sync? Daniel _______________________________________________ devicetree-discuss mailing list devicetree-discuss@lists.ozlabs.org https://lists.ozlabs.org/listinfo/devicetree-discuss