platform: tegra: Reduce ISO efficiency at max freq for IsoMgr

Seems like at 50% ISO efficiency we get underflows. 45% matches the
guidance provided by MC Arch so let's use that.

Change-Id: I3852a5c3fa17b750f37834565430bec6154adc6e
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/662782
(cherry picked from commit 5a88e63be361e3b655c30377ebc71735bcf8b1c5)
Reviewed-on: http://git-master/r/665827
Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Yu-Huan Hsu <yhsu@nvidia.com>

diff --git a/drivers/platform/tegra/mc/isomgr.c b/drivers/platform/tegra/mc/isomgr.c
index 91a54ccd34360df9d99502901f19a08f2873a07d..92d4f959dbd4a81e943ffa1f622a5d5a8ff48bee 100644 (file)
--- a/drivers/platform/tegra/mc/isomgr.c
+++ b/drivers/platform/tegra/mc/isomgr.c
@@ -307,7 +307,8 @@ static struct isoclient_info *get_iso_client_info(void)
                break;
        case TEGRA_CHIPID_TEGRA21:
                cinfo = tegra21x_isoclients;
-               iso_bw_percentage = 50;
+               iso_bw_percentage = 45; /* Hack: Should be determined based on
+                                          DRAM type. */
                break;
        default:
                cinfo = tegra_null_isoclients;