kellen/gasket-driver
1
0
Fork 0
forked from MIrrors/gasket-driver
Code Pull Requests Actions Packages Activity

Address b/117119472

Browse Source 
Change-Id: I88c018628768b56e5904d89db2bd1d767078c4d1
This commit is contained in:
Leonid Lobachev
2019-01-15 14:20:24 -08:00
parent 75b8025f7e
commit 641f4139f4
1 changed files with 10 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
apex_driver.c
View File

@@ -495,12 +495,12 @@ static long apex_set_performance_expectation(
{
struct apex_performance_expectation_ioctl ibuf;
uint32_t rg_gcb_clk_div = 0;
uint32_t rg_axi_clk_125m = 0;
const int AXI_CLK_125M_SHIFT = 2;
const int MCU_CLK_250M_SHIFT = 3;
uint32_t rg_axi_clk_fixed = 0;
const int AXI_CLK_FIXED_SHIFT = 2;
const int MCU_CLK_FIXED_SHIFT = 3;
// 8051 clock is always 250 MHz for PCIe, as it's not used at all.
const uint32_t rg_8051_clk_250m = 1;
// 8051 clock is fixed for PCIe, as it's not used at all.
const uint32_t rg_8051_clk_fixed = 1;
if (bypass_top_level)
return 0;
@@ -510,31 +510,23 @@ static long apex_set_performance_expectation(
switch (ibuf.performance) {
case APEX_PERFORMANCE_LOW:
// - GCB clock: 62.5 MHz
// - AXI clock: 125 MHz
rg_gcb_clk_div = 3;
rg_axi_clk_125m = 0;
rg_axi_clk_fixed = 0;
break;
case APEX_PERFORMANCE_MED:
// - GCB clock: 125 MHz
// - AXI clock: 125 MHz
rg_gcb_clk_div = 2;
rg_axi_clk_125m = 0;
rg_axi_clk_fixed = 0;
break;
case APEX_PERFORMANCE_HIGH:
// - GCB clock: 250 MHz
// - AXI clock: 125 MHz
rg_gcb_clk_div = 1;
rg_axi_clk_125m = 0;
rg_axi_clk_fixed = 0;
break;
case APEX_PERFORMANCE_MAX:
// - GCB clock: 500 MHz
// - AXI clock: 125 MHz
rg_gcb_clk_div = 0;
rg_axi_clk_125m = 0;
rg_axi_clk_fixed = 0;
break;
default:
@@ -546,7 +538,7 @@ static long apex_set_performance_expectation(
*/
gasket_read_modify_write_32(
gasket_dev, APEX_BAR_INDEX, APEX_BAR2_REG_SCU_3,
(rg_gcb_clk_div | (rg_axi_clk_125m << AXI_CLK_125M_SHIFT) | (rg_8051_clk_250m << MCU_CLK_250M_SHIFT)),
(rg_gcb_clk_div | (rg_axi_clk_fixed << AXI_CLK_FIXED_SHIFT) | (rg_8051_clk_fixed << MCU_CLK_FIXED_SHIFT)),
/*mask_width=*/4, /*mask_shift=*/28);
return 0;