[U-Boot] [PATCH v2 04/10] powerpc, 8xx: Implement GLL2 ERRATA

Christophe Leroy
2017-07-06T08:33:15Z

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
arch/powerpc/cpu/mpc8xx/cpu_init.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/arch/powerpc/cpu/mpc8xx/cpu_init.c b/arch/powerpc/cpu/mpc8xx/cpu_init.c
index cf1280983a..52406e8483 100644
--- a/arch/powerpc/cpu/mpc8xx/cpu_init.c
+++ b/arch/powerpc/cpu/mpc8xx/cpu_init.c
@@ -51,6 +51,14 @@ void cpu_init_f(immap_t __iomem *immr)
clrsetbits_be32(&immr->im_clkrst.car_sccr, ~SCCR_MASK,
CONFIG_SYS_SCCR);

+ /* BUG MPC866 GLL2 consideration */
+ reg = in_be32(&immr->im_clkrst.car_sccr);
+ /* probably we use the mode 1:2:1 */
+ if ((reg & 0x00060000) == 0x00020000) {
+ clrbits_be32(&immr->im_clkrst.car_sccr, 0x00060000);
+ setbits_be32(&immr->im_clkrst.car_sccr, 0x00020000);
+ }
+
/* PLL (CPU clock) settings (15-30) */

out_be32(&immr->im_clkrstk.cark_plprcrk, KAPWR_KEY);
--
2.12.0