[src/trunk]: src/sys/arch/arm/nvidia make sure the display controllar partiti...

[jmcneill <jmcneill%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/21ae6d262f9a
branches:  trunk
changeset: 808476:21ae6d262f9a
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Mon May 18 21:32:05 2015 +0000

description:
make sure the display controllar partition is powered on

diffstat:

 sys/arch/arm/nvidia/tegra_car.c |  11 +++++++++--
 1 files changed, 9 insertions(+), 2 deletions(-)

diffs (50 lines):

diff -r 0d62c58d065f -r 21ae6d262f9a sys/arch/arm/nvidia/tegra_car.c
--- a/sys/arch/arm/nvidia/tegra_car.c   Mon May 18 21:21:11 2015 +0000
+++ b/sys/arch/arm/nvidia/tegra_car.c   Mon May 18 21:32:05 2015 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: tegra_car.c,v 1.17 2015/05/18 20:36:42 jmcneill Exp $ */
+/* $NetBSD: tegra_car.c,v 1.18 2015/05/18 21:32:05 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2015 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -29,7 +29,7 @@
 #include "locators.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: tegra_car.c,v 1.17 2015/05/18 20:36:42 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: tegra_car.c,v 1.18 2015/05/18 21:32:05 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/bus.h>
@@ -641,6 +641,7 @@
        bus_space_handle_t bsh;
        bus_size_t src_reg;
        uint32_t dev_bit;
+       u_int partid;
 
        tegra_car_get_bs(&bst, &bsh);
 
@@ -648,10 +649,12 @@
        case 0:
                dev_bit = CAR_DEV_L_DISP1;
                src_reg = CAR_CLKSRC_DISP1_REG;
+               partid = PMC_PARTID_DIS;
                break;
        case 1:
                dev_bit = CAR_DEV_L_DISP2;
                src_reg = CAR_CLKSRC_DISP2_REG;
+               partid = PMC_PARTID_DISB;
                break;
        default:
                return EINVAL;
@@ -661,6 +664,10 @@
        bus_space_write_4(bst, bsh, CAR_RST_DEV_L_SET_REG, dev_bit);
        bus_space_write_4(bst, bsh, CAR_CLK_ENB_L_SET_REG, dev_bit);
 
+       /* Turn on power to display partition */
+       tegra_pmc_power(partid, true);
+       tegra_pmc_remove_clamping(partid);
+
        /* Select PLLP for clock source */
        bus_space_write_4(bst, bsh, src_reg,
            __SHIFTIN(CAR_CLKSRC_DISP_SRC_PLLP_OUT0,