variant.h

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#ifndef VARIANT_H
#define VARIANT_H
 
#include <stdint.h>
 
/*
 * RAM_ID[3:0] are on GPIO_SSUS[40:37]
 * 0b0000 - 4GiB total - 2 x 2GiB Micron MT41K256M16HA-125:E 1600MHz
 * 0b0001 - 4GiB total - 2 x 2GiB Hynix  H5TC4G63AFR-PBA 1600MHz
 * 0b0010 - 4GiB total - 2 x 2GiB Samsung K4B4G1646Q-HYK0 1600MHz
 * 0b0011 - 2GiB total - 1 x 2GiB Samsung K4B4G1646Q-HYK0 1600MHz
 * 0b0100 - 2GiB total - 1 x 2GiB Micron MT41K256M16HA-125:E 1600MHz
 * 0b0101 - 2GiB total - 1 x 2GiB Hynix  H5TC4G63AFR-PBA 1600MHz
 * 0b0110 - 4GiB total - 2 x 2GiB Samsung K4B4G1646E-BYK0 1600MHz
 * 0b0111 - 4GiB total - 2 x 2GiB Micron MT41K256M16TW-107 1600MHz
 * 0b1000 - 2GiB total - 1 x 2GiB Samsung K4B4G1646E-BYK0 1600MHz
 * 0b1001 - 2GiB total - 1 x 2GiB Micron MT41K256M16TW-107 1600MHz
 * 0b1010 - 4GiB total - 2 x 2GiB Hynix  H5TC4G63CFR-PBA 1600MHz
 * 0b1011 - 2GiB total - 1 x 2GiB Hynix  H5TC4G63CFR-PBA 1600MHz
 */
 
static const uint32_t dual_channel_config =
        (1 << 0) | (1 << 1) | (1 << 2) | (1 << 6) | (1 << 7) | (1 << 10);
 
#define SPD_SIZE 256
#define GPIO_SSUS_37_PAD 57
#define GPIO_SSUS_38_PAD 50
#define GPIO_SSUS_39_PAD 58
#define GPIO_SSUS_40_PAD 52
#define GPIO_SSUS_40_PAD_USE_PULLDOWN
 
#endif