MALI-400 : eglCreateImageKHR, EGL_GL_TEXTURE_2D_KHR and updating textures with the CPU

Hello everybody, I'm currently struggling with the said system.Is there somewhere a *full* sample code for Linux that does create an EGLImage for a texture and demonstrates how to update it with the CPU ?

Reference documentation seems ok but eglGetError keeps telling me I don't know what I'm doing

I won't post my various tries here because they don't work and therefore have no value for the reader, but I've been romaing the web and trying stuff for a while.

Cheers, Tramb