| Message ID | a79184c5-3e28-bbac-0783-992615d49fae@lechnology.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, Jan 11, 2018 at 2:04 PM, David Lechner <david@lechnology.com> wrote: > On 01/11/2018 12:50 PM, Adam Ford wrote: >> >> On Thu, Jan 11, 2018 at 12:29 PM, David Lechner <david@lechnology.com> >> wrote: >>> >>> If removing the "clk_ignore_unused" option causes the board to not boot, >>> then we still have problems that need to be fixed, so please also test >>> without this option. >> >> >> Without this option, it still does not boot. Without device tree it >> hangs after: >> >> [snip] >> >> NET: Registered protocol family 17 >> Loading compiled-in X.509 certificates >> console [netcon0] enabled >> netconsole: network logging started >> davinci_emac davinci_emac.1: using random MAC addr: 5e:38:1a:1f:4f:77 >> mmc0: host does not support reading read-only switch, assuming >> write-enable >> hctosys: unable to open rtc device (rtc0) >> mmc0: new high speed SDHC card at address b368 >> >> >> With device tree it hangs after: >> >> [snip] >> mmc0: host does not support reading read-only switch, assuming >> write-enable >> mmc0: new high speed SDHC card at address b368 >> mmcblk0: mmc0:b368 00000 3.75 GiB >> mmcblk0: p1 p2 >> pca953x 0-0020: 0-0020 supply vcc not found, using dummy regulator >> pca953x 0-0020: failed reading register >> pca953x: probe of 0-0020 failed with error -121 >> console [netcon0] enabled >> netconsole: network logging started >> davinci_emac 1e20000.ethernet: incompatible machine/device type for >> reading mac address >> hctosys: unable to open rtc device (rtc0) >> >> > > Please try this change: > > diff --git a/drivers/clk/davinci/psc-da850.c > b/drivers/clk/davinci/psc-da850.c > index 3fd6b49..a526cc2 100644 > --- a/drivers/clk/davinci/psc-da850.c > +++ b/drivers/clk/davinci/psc-da850.c > @@ -17,7 +17,7 @@ static const struct davinci_psc_clk_info da850_psc0_info[] > __initconst = { > LPSC(0, 0, tpcc0, pll0_sysclk2, LPSC_ALWAYS_ENABLED), > LPSC(1, 0, tptc0, pll0_sysclk2, LPSC_ALWAYS_ENABLED), > LPSC(2, 0, tptc1, pll0_sysclk2, LPSC_ALWAYS_ENABLED), > - LPSC(3, 0, aemif, pll0_sysclk3, 0), > + LPSC(3, 0, aemif, pll0_sysclk3, LPSC_ALWAYS_ENABLED), > LPSC(4, 0, spi0, pll0_sysclk2, 0), > LPSC(5, 0, mmcsd0, pll0_sysclk2, 0), > LPSC(6, 0, aintc, pll0_sysclk4, LPSC_ALWAYS_ENABLED), > > > > If that does not work, try adding LPSC_ALWAYS_ENABLED to all of the clocks > in this file and then eliminate them one by one until you find which one is > preventing boot. > Unfortunately, that didn't work. I switch all the entries in both tables that had a 0 to LPSC_ALWAYS_ENABLED, but no luck booting. > If it still does not boot, there is a similar DIVCLK_ALWAYS_ENABLED flag in > drivers/clk/davinci/pll-da850.c that you can repeat the exercise with. Add > DIVCLK_ALWAYS_ENABLED to all of the clocks there and then eliminate it one > by one until you find the clock that is causing the problem. Still no good news. I switched all the entries with a 0 to DIVCLK_ALWAYS_ENABLED and it still didn't finish booting. I wonder if Sekhar Nori might have some suggestions. I didn't look at the code or try to understand it. I just changed the settings. > adam
diff --git a/drivers/clk/davinci/psc-da850.c b/drivers/clk/davinci/psc-da850.c index 3fd6b49..a526cc2 100644 --- a/drivers/clk/davinci/psc-da850.c +++ b/drivers/clk/davinci/psc-da850.c @@ -17,7 +17,7 @@ static const struct davinci_psc_clk_info da850_psc0_info[] __initconst = { LPSC(0, 0, tpcc0, pll0_sysclk2, LPSC_ALWAYS_ENABLED), LPSC(1, 0, tptc0, pll0_sysclk2, LPSC_ALWAYS_ENABLED), LPSC(2, 0, tptc1, pll0_sysclk2, LPSC_ALWAYS_ENABLED), - LPSC(3, 0, aemif, pll0_sysclk3, 0), + LPSC(3, 0, aemif, pll0_sysclk3, LPSC_ALWAYS_ENABLED), LPSC(4, 0, spi0, pll0_sysclk2, 0), LPSC(5, 0, mmcsd0, pll0_sysclk2, 0), LPSC(6, 0, aintc, pll0_sysclk4, LPSC_ALWAYS_ENABLED),