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authorAngel Pons <th3fanbus@gmail.com>2021-01-22 15:24:48 +0100
committerPatrick Georgi <pgeorgi@google.com>2021-01-28 09:18:18 +0000
commit73c967665b6347490a22371c558f34c022836181 (patch)
treef53f66951fcdd8235f77e0a16fb1340e434a54b0 /src/drivers/generic/bayhub
parenta4ecf9654e5ee84958dc8dfea3c1391da61bd263 (diff)
bayhub bh720: Factor out common HS200 init code
Except for one debug print in sarien, both functions are identical. Move them to driver code to avoid unnecessary redundancy. Change-Id: I82635a289e3c05119eab4ee1f7a6bf3a8a1725c1 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/49833 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
Diffstat (limited to 'src/drivers/generic/bayhub')
-rw-r--r--src/drivers/generic/bayhub/bh720.c48
-rw-r--r--src/drivers/generic/bayhub/bh720.h2
-rw-r--r--src/drivers/generic/bayhub/chip.h3
3 files changed, 49 insertions, 4 deletions
diff --git a/src/drivers/generic/bayhub/bh720.c b/src/drivers/generic/bayhub/bh720.c
index 24386642eb..40788cd31d 100644
--- a/src/drivers/generic/bayhub/bh720.c
+++ b/src/drivers/generic/bayhub/bh720.c
@@ -4,6 +4,7 @@
#include <console/console.h>
#include <device/device.h>
+#include <device/mmio.h>
#include <device/path.h>
#include <device/pci.h>
#include <device/pci_ops.h>
@@ -11,8 +12,50 @@
#include "chip.h"
#include "bh720.h"
-__attribute__((weak)) void board_bh720(struct device *dev)
+static void bh720_program_hs200_mode(struct device *dev)
{
+ u32 sdbar;
+ u32 bh720_pcr_data;
+
+ sdbar = pci_read_config32(dev, PCI_BASE_ADDRESS_1);
+
+ /* Enable Memory Access Function */
+ write32((void *)(sdbar + BH720_MEM_ACCESS_EN), 0x40000000);
+ write32((void *)(sdbar + BH720_MEM_RW_DATA), 0x80000000);
+ write32((void *)(sdbar + BH720_MEM_RW_ADR), 0x800000D0);
+
+ /* Set EMMC VCCQ 1.8V PCR 0x308[4] */
+ write32((void *)(sdbar + BH720_MEM_RW_ADR),
+ BH720_MEM_RW_READ | BH720_PCR_EMMC_SETTING);
+ bh720_pcr_data = read32((void *)(sdbar + BH720_MEM_RW_DATA));
+ write32((void *)(sdbar + BH720_MEM_RW_DATA),
+ bh720_pcr_data | BH720_PCR_EMMC_SETTING_1_8V);
+ write32((void *)(sdbar + BH720_MEM_RW_ADR),
+ BH720_MEM_RW_WRITE | BH720_PCR_EMMC_SETTING);
+
+ /* Set Base clock to 200MHz(PCR 0x304[31:16] = 0x2510) */
+ write32((void *)(sdbar + BH720_MEM_RW_ADR),
+ BH720_MEM_RW_READ | BH720_PCR_DrvStrength_PLL);
+ bh720_pcr_data = read32((void *)(sdbar + BH720_MEM_RW_DATA));
+ bh720_pcr_data &= 0x0000FFFF;
+ bh720_pcr_data |= 0x2510 << 16;
+ write32((void *)(sdbar + BH720_MEM_RW_DATA), bh720_pcr_data);
+ write32((void *)(sdbar + BH720_MEM_RW_ADR),
+ BH720_MEM_RW_WRITE | BH720_PCR_DrvStrength_PLL);
+
+ /* Use PLL Base clock PCR 0x3E4[22] = 1 */
+ write32((void *)(sdbar + BH720_MEM_RW_ADR),
+ BH720_MEM_RW_READ | BH720_PCR_CSR);
+ bh720_pcr_data = read32((void *)(sdbar + BH720_MEM_RW_DATA));
+ write32((void *)(sdbar + BH720_MEM_RW_DATA),
+ bh720_pcr_data | BH720_PCR_CSR_EMMC_MODE_SEL);
+ write32((void *)(sdbar + BH720_MEM_RW_ADR),
+ BH720_MEM_RW_WRITE | BH720_PCR_CSR);
+
+ /* Disable Memory Access */
+ write32((void *)(sdbar + BH720_MEM_RW_DATA), 0x80000001);
+ write32((void *)(sdbar + BH720_MEM_RW_ADR), 0x800000D0);
+ write32((void *)(sdbar + BH720_MEM_ACCESS_EN), 0x80000000);
}
static void bh720_init(struct device *dev)
@@ -43,7 +86,8 @@ static void bh720_init(struct device *dev)
pci_read_config32(dev, BH720_LINK_CTRL));
}
- board_bh720(dev);
+ if (config && !config->disable_hs200_mode)
+ bh720_program_hs200_mode(dev);
if (config && config->vih_tuning_value) {
/* Tune VIH */
diff --git a/src/drivers/generic/bayhub/bh720.h b/src/drivers/generic/bayhub/bh720.h
index d8c3196495..cc5fbea07b 100644
--- a/src/drivers/generic/bayhub/bh720.h
+++ b/src/drivers/generic/bayhub/bh720.h
@@ -39,5 +39,3 @@ enum {
BH720_PCR_CSR = 0x3e4,
BH720_PCR_CSR_EMMC_MODE_SEL = BIT(22),
};
-
-void board_bh720(struct device *dev);
diff --git a/src/drivers/generic/bayhub/chip.h b/src/drivers/generic/bayhub/chip.h
index f898378cb4..77b7512143 100644
--- a/src/drivers/generic/bayhub/chip.h
+++ b/src/drivers/generic/bayhub/chip.h
@@ -9,6 +9,9 @@ struct drivers_generic_bayhub_config {
/* 1 to enable power-saving mode, 0 to disable */
int power_saving;
+ /* When set, disables programming HS200 mode */
+ bool disable_hs200_mode;
+
/* CLK and DAT tuning values */
uint8_t vih_tuning_value;
};