On 01/11/2018 12:50 PM, Adam Ford wrote:
On Thu, Jan 11, 2018 at 12:29 PM, David Lechner <david@xxxxxxxxxxxxxx> 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.
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.
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