From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ian Campbell Date: Sat, 21 Nov 2015 15:48:29 +0000 Subject: [U-Boot] [PATCH] sunxi: Set AHB1 clock to PLL6/3 on all clock_sun6i.h using SoCs In-Reply-To: <1448044323-4447-1-git-send-email-hdegoede@redhat.com> References: <1448044323-4447-1-git-send-email-hdegoede@redhat.com> Message-ID: <1448120909.13926.3.camel@hellion.org.uk> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Fri, 2015-11-20 at 19:32 +0100, Hans de Goede wrote: > According to the datasheets the max speed of AHB1 is 276 MHz, so > setting it to PLL6 / 3 which gives us 200MHz everywhere is fine, > and gives us a nice speed-up in certain workloads. > > Suggested-by: Chen-Yu Tsai > Signed-off-by: Hans de Goede I suppose you've tested this on at least one such board? In that case: Acked-by: Ian Campbell > --- > arch/arm/include/asm/arch-sunxi/clock_sun6i.h | 4 ---- > 1 file changed, 4 deletions(-) > > diff --git a/arch/arm/include/asm/arch-sunxi/clock_sun6i.h > b/arch/arm/include/asm/arch-sunxi/clock_sun6i.h > index 09337a1..5c76275 100644 > --- a/arch/arm/include/asm/arch-sunxi/clock_sun6i.h > +++ b/arch/arm/include/asm/arch-sunxi/clock_sun6i.h > @@ -220,11 +220,7 @@ struct sunxi_ccm_reg { > #define CCM_PLL11_CTRL_UPD (0x1 << 30) > #define CCM_PLL11_CTRL_EN (0x1 << 31) > > -#if defined CONFIG_MACH_SUN8I_H3 > #define AHB1_ABP1_DIV_DEFAULT 0x00003180 /* > AHB1=PLL6/3,APB1=AHB1/2 */ > -#else > -#define AHB1_ABP1_DIV_DEFAULT 0x00002020 /* > AHB1=AXI/4, APB1=AHB1/2 */ > -#endif > > #define AXI_GATE_OFFSET_DRAM 0 >