On Wed, Nov 21, 2012 at 11:29 AM, Tetsuyuki Kobayashi <k...@kmckk.co.jp> wrote: > After stress test, I found some of kzm9g board occures memory failure. > This patch adust SDRAM setting. > - Enlarge drivability on both SDRAM controller and SDRAM itself > - Raise core voltage > > Signed-off-by: Tetsuyuki Kobayashi <k...@kmckk.co.jp>
Acked-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu...@renesas.com> > --- > board/kmc/kzm9g/kzm9g.c | 17 ++++++++++++++--- > 1 file changed, 14 insertions(+), 3 deletions(-) > > diff --git a/board/kmc/kzm9g/kzm9g.c b/board/kmc/kzm9g/kzm9g.c > index 54f25e0..1aeb5fe 100644 > --- a/board/kmc/kzm9g/kzm9g.c > +++ b/board/kmc/kzm9g/kzm9g.c > @@ -84,7 +84,7 @@ static void sbsc_init(struct sh73a0_sbsc *sbsc) > writel(0x0017040a, &sbsc->sdwcr01); > writel(0x31020707, &sbsc->sdwcr10); > writel(0x0017040a, &sbsc->sdwcr11); > - writel(0x05555555, &sbsc->sddrvcr0); > + writel(0x055557ff, &sbsc->sddrvcr0); /* Enlarge drivability of > LPDQS0-3, LPCLK */ > writel(0x30000000, &sbsc->sdwcr2); > > writel(readl(&sbsc->sdpcr) | 0x80, &sbsc->sdpcr); > @@ -112,7 +112,7 @@ static void sbsc_init(struct sh73a0_sbsc *sbsc) > writel(0x0, SDMRA1A); > writel(0x00000402, &sbsc->sdmracr0); > writel(0x0, SDMRA1A); > - writel(0x00000403, &sbsc->sdmracr0); > + writel(0x00000203, &sbsc->sdmracr0); /* MR3 register DS=2 */ > writel(0x0, SDMRA1A); > writel(0x0, SDMRA2A); > } else { > @@ -120,7 +120,7 @@ static void sbsc_init(struct sh73a0_sbsc *sbsc) > writel(0x0, SDMRA1B); > writel(0x00000402, &sbsc->sdmracr0); > writel(0x0, SDMRA1B); > - writel(0x00000403, &sbsc->sdmracr0); > + writel(0x00000203, &sbsc->sdmracr0); /* MR3 register DS=2 */ > writel(0x0, SDMRA1B); > writel(0x0, SDMRA2B); > } > @@ -301,8 +301,19 @@ int board_early_init_f(void) > return 0; > } > > +void adjust_core_voltage(void) > +{ > + u8 data; > + > + i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); > + data = 0x35; > + i2c_set_bus_num(0); > + i2c_write(0x40, 3, 1, &data, 1); > +} > + > int board_init(void) > { > + adjust_core_voltage(); > sh73a0_pinmux_init(); > > /* SCIFA 4 */ > -- > 1.7.9.5 > > _______________________________________________ > U-Boot mailing list > U-Boot@lists.denx.de > http://lists.denx.de/mailman/listinfo/u-boot -- Nobuhiro Iwamatsu _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot