| Message ID | 1446770376-8205-6-git-send-email-s-kipisz2@ti.com |
|---|---|
| State | Superseded |
| Delegated to: | Tom Rini |
| Headers | show |
On Friday 06 November 2015 06:09 AM, Steve Kipisz wrote: > Many TI EVMs have capability to store relevant board information > such as DDR description in EEPROM. Further many pad configuration > variations can occur as part of revision changes in the platform. > In-order to support these at runtime, we for a board detection hook > which is available for override from board files that may desire to do > so. > > NOTE: All TI EVMs are capable of detecting board information based on > early clocks that are configured. However, in case of additional needs > this can be achieved within the override logic from within the board > file. Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com> Thanks and regards, Lokesh > > Signed-off-by: Steve Kipisz <s-kipisz2@ti.com> > Reviewed-by: Tom Rini <trini@konsulko.com> > --- > Changes in v4 (since v3): > - No changes > - Picked up Reviewed-by from previous post > > v3: https://patchwork.ozlabs.org/patch/540194/ > > v2: http://marc.info/?t=144655344600006&r=1&w=2 > (mailing list squashed original submission) > > Changes in v2: > - New patch > > arch/arm/cpu/armv7/omap-common/hwinit-common.c | 11 +++++++++++ > arch/arm/include/asm/arch-omap4/sys_proto.h | 1 + > arch/arm/include/asm/arch-omap5/sys_proto.h | 1 + > 3 files changed, 13 insertions(+) > > diff --git a/arch/arm/cpu/armv7/omap-common/hwinit-common.c b/arch/arm/cpu/armv7/omap-common/hwinit-common.c > index 91f2dead364b..9e9376d0e6e6 100644 > --- a/arch/arm/cpu/armv7/omap-common/hwinit-common.c > +++ b/arch/arm/cpu/armv7/omap-common/hwinit-common.c > @@ -97,6 +97,16 @@ int arch_cpu_init(void) > } > #endif /* CONFIG_ARCH_CPU_INIT */ > > +/** > + * do_board_detect() - Detect board description > + * > + * Function to detect board description. This is expected to be > + * overridden in the SoC family board file where desired. > + */ > +void __weak do_board_detect(void) > +{ > +} > + > /* > * Routine: s_init > * Description: Does early system init of watchdog, muxing, andclocks > @@ -128,6 +138,7 @@ void s_init(void) > do_io_settings(); > #endif > setup_early_clocks(); > + do_board_detect(); > prcm_init(); > } > > diff --git a/arch/arm/include/asm/arch-omap4/sys_proto.h b/arch/arm/include/asm/arch-omap4/sys_proto.h > index 26e9a194f036..fbb52093c65a 100644 > --- a/arch/arm/include/asm/arch-omap4/sys_proto.h > +++ b/arch/arm/include/asm/arch-omap4/sys_proto.h > @@ -39,6 +39,7 @@ u32 wait_on_value(u32, u32, void *, u32); > void sdelay(unsigned long); > void setup_early_clocks(void); > void prcm_init(void); > +void do_board_detect(void); > void bypass_dpll(u32 const base); > void freq_update_core(void); > u32 get_sys_clk_freq(void); > diff --git a/arch/arm/include/asm/arch-omap5/sys_proto.h b/arch/arm/include/asm/arch-omap5/sys_proto.h > index 18902628739b..23a33cb233bb 100644 > --- a/arch/arm/include/asm/arch-omap5/sys_proto.h > +++ b/arch/arm/include/asm/arch-omap5/sys_proto.h > @@ -50,6 +50,7 @@ u32 wait_on_value(u32, u32, void *, u32); > void sdelay(unsigned long); > void setup_early_clocks(void); > void prcm_init(void); > +void do_board_detect(void); > void bypass_dpll(u32 const base); > void freq_update_core(void); > u32 get_sys_clk_freq(void); >
diff --git a/arch/arm/cpu/armv7/omap-common/hwinit-common.c b/arch/arm/cpu/armv7/omap-common/hwinit-common.c index 91f2dead364b..9e9376d0e6e6 100644 --- a/arch/arm/cpu/armv7/omap-common/hwinit-common.c +++ b/arch/arm/cpu/armv7/omap-common/hwinit-common.c @@ -97,6 +97,16 @@ int arch_cpu_init(void) } #endif /* CONFIG_ARCH_CPU_INIT */ +/** + * do_board_detect() - Detect board description + * + * Function to detect board description. This is expected to be + * overridden in the SoC family board file where desired. + */ +void __weak do_board_detect(void) +{ +} + /* * Routine: s_init * Description: Does early system init of watchdog, muxing, andclocks @@ -128,6 +138,7 @@ void s_init(void) do_io_settings(); #endif setup_early_clocks(); + do_board_detect(); prcm_init(); } diff --git a/arch/arm/include/asm/arch-omap4/sys_proto.h b/arch/arm/include/asm/arch-omap4/sys_proto.h index 26e9a194f036..fbb52093c65a 100644 --- a/arch/arm/include/asm/arch-omap4/sys_proto.h +++ b/arch/arm/include/asm/arch-omap4/sys_proto.h @@ -39,6 +39,7 @@ u32 wait_on_value(u32, u32, void *, u32); void sdelay(unsigned long); void setup_early_clocks(void); void prcm_init(void); +void do_board_detect(void); void bypass_dpll(u32 const base); void freq_update_core(void); u32 get_sys_clk_freq(void); diff --git a/arch/arm/include/asm/arch-omap5/sys_proto.h b/arch/arm/include/asm/arch-omap5/sys_proto.h index 18902628739b..23a33cb233bb 100644 --- a/arch/arm/include/asm/arch-omap5/sys_proto.h +++ b/arch/arm/include/asm/arch-omap5/sys_proto.h @@ -50,6 +50,7 @@ u32 wait_on_value(u32, u32, void *, u32); void sdelay(unsigned long); void setup_early_clocks(void); void prcm_init(void); +void do_board_detect(void); void bypass_dpll(u32 const base); void freq_update_core(void); u32 get_sys_clk_freq(void);