The Beagle rev Cx and Overo boards are using both SDRC CSes. The MUX setting is needed for the second CS clock signal to allow the 2 RAM parts to be put in self-refresh correctly. This also works on rev B Beagle boards with 128M of RAM.
From: Steve Sakoman steve@sakoman.com From: Jean Pihet jpihet@mvista.com Signed-off-by: Jean Pihet jpihet@mvista.com Signed-off-by: Steve Sakoman steve@sakoman.com Signed-off-by: Dirk Behme dirk.behme@googlemail.com ---
board/omap3/beagle/beagle.h | 2 +- board/omap3/overo/overo.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)
Index: u-boot-main/board/omap3/overo/overo.h =================================================================== --- u-boot-main.orig/board/omap3/overo/overo.h +++ u-boot-main/board/omap3/overo/overo.h @@ -376,6 +376,6 @@ const omap3_sysinfo sysinfo = { MUX_VAL(CP(D2D_MBUSFLAG), (IEN | PTD | DIS | M0)) /*d2d_mbusflag*/\ MUX_VAL(CP(D2D_SBUSFLAG), (IEN | PTD | DIS | M0)) /*d2d_sbusflag*/\ MUX_VAL(CP(SDRC_CKE0), (IDIS | PTU | EN | M0)) /*sdrc_cke0*/\ - MUX_VAL(CP(SDRC_CKE1), (IDIS | PTD | DIS | M7)) /*sdrc_cke1*/ + MUX_VAL(CP(SDRC_CKE1), (IDIS | PTU | EN | M0)) /*sdrc_cke1*/
#endif Index: u-boot-main/board/omap3/beagle/beagle.h =================================================================== --- u-boot-main.orig/board/omap3/beagle/beagle.h +++ u-boot-main/board/omap3/beagle/beagle.h @@ -371,7 +371,7 @@ const omap3_sysinfo sysinfo = { MUX_VAL(CP(D2D_MBUSFLAG), (IEN | PTD | DIS | M0)) /*d2d_mbusflag*/\ MUX_VAL(CP(D2D_SBUSFLAG), (IEN | PTD | DIS | M0)) /*d2d_sbusflag*/\ MUX_VAL(CP(SDRC_CKE0), (IDIS | PTU | EN | M0)) /*sdrc_cke0*/\ - MUX_VAL(CP(SDRC_CKE1), (IDIS | PTD | DIS | M7)) /*sdrc_cke1*/ + MUX_VAL(CP(SDRC_CKE1), (IDIS | PTU | EN | M0)) /*sdrc_cke1*/
#define MUX_BEAGLE_C() \ MUX_VAL(CP(MCBSP3_DX), (IEN | PTD | DIS | M4)) /*GPIO_140*/\