> -----Original Message-----
> From: Meenakshi Aggarwal <meenakshi.aggar...@nxp.com>
> Sent: Tuesday, February 12, 2019 2:44 PM
> To: u-boot@lists.denx.de; Prabhakar Kushwaha
> <prabhakar.kushw...@nxp.com>
> Cc: Meenakshi Aggarwal <meenakshi.aggar...@nxp.com>
> Subject: [PATCH] mc : Add support to run MC in 128 MB DDR size
Ashish: Rephrase to "Reduce MC memory size to 128M" from the above it sound
like system DDR is 128MB
>
> ls2088, ls1088 : minimum DDR size for MC is 128 MB
> lx2 : minimum DDR size for MC is 256 MB
>
> Signed-off-by: Meenakshi Aggarwal <meenakshi.aggar...@nxp.com>
> ---
> drivers/net/fsl-mc/mc.c | 20 +++++++++++++++++---
> include/configs/ls1088a_common.h | 2 +- include/configs/ls2080a_common.h
> | 2 +- include/configs/lx2160a_common.h | 2 +-
> 4 files changed, 20 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/net/fsl-mc/mc.c b/drivers/net/fsl-mc/mc.c index
> fa0a05d..98c57ed 100644
> --- a/drivers/net/fsl-mc/mc.c
> +++ b/drivers/net/fsl-mc/mc.c
> @@ -684,7 +684,15 @@ int mc_init(u64 mc_fw_addr, u64 mc_dpc_addr)
> size_t mc_ram_size = mc_get_dram_block_size();
>
> mc_ram_num_256mb_blocks = mc_ram_size /
> MC_RAM_SIZE_ALIGNMENT;
> - if (mc_ram_num_256mb_blocks < 1 || mc_ram_num_256mb_blocks >
> 0xff) {
> +
> + /*
> + * To support 128 MB DDR Size for MC
> + */
Ashish: How does the MC grow now, wrt to MC base ?.
Earlier it was 2 blocks of 256 up and rest down.
Considering MC base alignment is 512. 256 MB is always wasted from top of the
memory, now since the minimum block is 128MB
> + if (mc_ram_num_256mb_blocks == 0) {
> + mc_ram_num_256mb_blocks = 0xFF;
> + }
> +
> + if (mc_ram_num_256mb_blocks > 0xff) {
> error = -EINVAL;
> printf("fsl-mc: ERROR: invalid MC private RAM size (%lu)\n",
> mc_ram_size);
> @@ -731,8 +739,14 @@ int mc_init(u64 mc_fw_addr, u64 mc_dpc_addr)
> /*
> * Tell MC what is the address range of the DRAM block assigned to it:
> */
> - reg_mcfbalr = (u32)mc_ram_addr |
> - (mc_ram_num_256mb_blocks - 1);
> + if (mc_ram_num_256mb_blocks < 0xFF) {
> + reg_mcfbalr = (u32)mc_ram_addr |
> + (mc_ram_num_256mb_blocks - 1);
> + } else {
> + reg_mcfbalr = (u32)mc_ram_addr |
> + (mc_ram_num_256mb_blocks);
> + }
> +
> out_le32(&mc_ccsr_regs->reg_mcfbalr, reg_mcfbalr);
> out_le32(&mc_ccsr_regs->reg_mcfbahr,
> (u32)(mc_ram_addr >> 32));
> diff --git a/include/configs/ls1088a_common.h
> b/include/configs/ls1088a_common.h
> index 89133c2..1509292 100644
> --- a/include/configs/ls1088a_common.h
> +++ b/include/configs/ls1088a_common.h
> @@ -154,7 +154,7 @@ unsigned long long get_qixis_addr(void);
> */
>
> #if defined(CONFIG_FSL_MC_ENET)
> -#define CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE (512UL *
> 1024 * 1024)
> +#define CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE (128UL *
> 1024 * 1024)
> #endif
> /* Command line configuration */
> #define CONFIG_CMD_CACHE
> diff --git a/include/configs/ls2080a_common.h
> b/include/configs/ls2080a_common.h
> index ab38981..7c1d35b 100644
> --- a/include/configs/ls2080a_common.h
> +++ b/include/configs/ls2080a_common.h
> @@ -159,7 +159,7 @@ unsigned long long get_qixis_addr(void);
> * 512MB aligned, so the min size to hide is 512MB.
> */
> #ifdef CONFIG_FSL_MC_ENET
> -#define CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE (512UL *
> 1024 * 1024)
> +#define CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE (128UL *
> 1024 * 1024)
> #endif
>
> /* Command line configuration */
> diff --git a/include/configs/lx2160a_common.h
> b/include/configs/lx2160a_common.h
> index 0f1a621..c4bbe96 100644
> --- a/include/configs/lx2160a_common.h
> +++ b/include/configs/lx2160a_common.h
> @@ -102,7 +102,7 @@
> * 512MB aligned, so the min size to hide is 512MB.
> */
> #ifdef CONFIG_FSL_MC_ENET
> -#define CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE (512UL * 1024 *
> 1024)
> +#define CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE (256UL * 1024 *
> 1024)
> #endif
>
> /* I2C bus multiplexer */
> --
> 1.9.1
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